Space, Sound, and Light: Toward a Sensory Experience of Ancient Monumental Architecture (Notes on Khorsabad)

Overview and thesis

• The article argues that scale and symmetry in Mesopotamian monumental architecture convey power, but a ground-level, multisensory reading reveals additional messages through movement, light, shadow, and sound.
• Ground-level phenomenology and movement-focused analysis can complement plan-based interpretations, offering a richer sense of how occupants experienced spaces.
• McMahon uses Khorsabad (Dur-Sharrukin), Sargon II’s Neo-Assyrian capital (constructed 717–706 B.C.E.), to demonstrate how manipulation of fields of view, light and shadow, and sound contributed to ideological messaging beyond mere size or symmetry.
• The approach integrates: plans and access with sensory perceptions of space, drawing on phenomenology and structuration theory to center individual action within social structures.

Key concepts and theoretical framework

• Monumental space conveys power through space size, symmetry, and plan, but users’ lived experiences also produce and reproduce social meanings.
• Access analysis (Hillier and Hanson) decomposes space use into entry points and movement patterns; however, it can oversimplify human behavior by omitting variables like size, materials, and contents.
• Giddens’ structuration theory offers a bottom-up view: individual actions constrain and reproduce social structures; the theory emphasizes people over plans and the bidirectional relationship between architecture and social action.
• Phenomenology (Tilley, Lefebvre) addresses lived space and the senses, but must balance subjectivity with grounding in plans and material traces.
• The study treats architectural space as capable of encoding messages through movement, perception of space, and sensory contrasts, not just through formal layout.

Khorsabad: city context and architectural scale

• Khorsabad was the Neo-Assyrian capital founded by Sargon II (r. 721–705 B.C.E.). It sits in northern Iraq near Nimrud and Nineveh.
• City layout resembles Nimrud in having a massive outer wall, a main citadel in the northwest, and a secondary citadel in the southern corner; both citadels protrude beyond the city wall, enhancing external visibility.
• The citadel plan is unusually asymmetrical, lacking the strict axial symmetry some scholars associate with imperial power demonstrations.
• The city encompassed roughly 280–300 hectares; lower town remains poorly documented due to excavation focus on citadel and later disturbances.
• The citadel featured some of the largest spaces known in Mesopotamia, including Sargon II’s palace and substantial wall relief programs, with especially large winged-bull guardians (lamassu or shedu).
• Wall reliefs in Khorsabad are 3–6 m high, much larger than Nimrud/Nineveh; doors and gates were monumental, with pivot stones and richly decorated facades.
• Construction began in Sargon II’s fifth year (717 B.C.E.) and the palace inauguration occurred in the 16th year (706 B.C.E.), shortly before Sargon’s death; the text records long labor input and a temporally staged narrative of completion, use, and abandonment.
• After Sargon’s death, the capital moved to Nineveh, but Khorsabad remained a significant administrative center for subsequent kings (Sennacherib to Ashurbanipal).

Archaeological evidence and occupation patterns

• Contextual occupational remains in Khorsabad are sparse; much of the material culture is missing or destroyed by later use and looting.
• Excavation tended to tunnel along walls to reconstruct plans, with centers of rooms rarely excavated; material culture in many spaces is scarce, possibly reflecting removal of records or selective preservation.
• Some rooms yielded jars, tools, ivory inlays, iron ingots, armor; other areas held cedar poles with bronze bands, suggesting finishing touches in temple and palace spaces.
• Some evidence points to at least two occupation phases in portions of the citadel, including burned zones and a mixture of public and possible later occupation layers; the interpretation is contested because much of the lower town remains undocumented.
• Despite sparse domestic remains, the palace complex and associated spaces reveal deliberate design choices to create controlled experiences for occupants and visitors.

Plan vs. experience: symmetry, asymmetry, and accessibility

• Scholarly consensus has often framed Mesopotamian cities as unplanned or organically grown, though elite palatial and temple complexes were planned.
• Khorsabad was founded on virgin soil, allowing for an imperial plan that could emphasize grandeur; however, the plan shows asymmetry and irregularities in main axes and wall alignments.
• Frankfort (1950s) critiqued Khorsabad as not fully matching his ideal of a planned imperial city due to asymmetries and non-parallel axes, while Lloyd and others described the citadel’s plan as “haphazard.”
• The author argues asymmetry can be a deliberate strategy to manipulate perception and movement, creating a nuanced experience rather than a static, iconic symbol of power.
• Major features (e.g., central ramp to the palace, trapezoidal courtyards) may prioritize experiential scale and accessibility over strict symmetry.
• The palace and Nabu temple appear as primary employers of the site’s visitors, while the northern quadrant may be less trafficked; overall, the space is organized to channel movement and perception toward certain destinations and views.
• The palace platform is a restricted- or controlled-access space with limited exterior doors, implying selective visibility and audience targeting rather than universal audience inclusion.

The palace: movement, openness, and asymmetry of experience

• The western end of the palace platform includes an unusual open space where the citadel projects beyond the city walls; this area lacks a single dominant entry, creating multiple routes into the palace complex.
• Margueron’s analysis highlights an unusual multiplicity of routes and openness among suites of rooms; there may be an upper floor, complicating vertical access and inward-looking orientation.
• The opening space contrasts with the rest of the palace, which is made of tightly controlled access and inward-looking sections; the juxtaposition may signal both inclusion for a limited audience and variable levels of control.
• The main palace ramp has been reconstructed as a prominent feature; however, the asymmetrical arrangement of courtyards and entrances creates an intentional experiential effect rather than a purely aesthetic one.
• Gate placement and the relationship of courtyards to exterior walls create deliberate selective visibility: the courtyard’s scale is hidden from outside observers when viewed from Gate B, focusing attention on the interior.
• The long-term question: was the asymmetry a cosmological design choice or a pragmatic solution to a sprawling complex? Some scholars have proposed cosmological design arguments; others note the difficulties in measuring precise relationships given the city’s scale.

Gates, movement, and the interface between ideology and experience

• Gates (A and B) are roofed structures larger than their enclosing walls, often with two or three aligned doorways; the gate space emphasizes the transition between outer and inner spaces.
• Gates encode movement and signal a change in social space; the act of passing through gates would have made entrants momentarily aware of the transition.
• Gate guardians (winged bulls or lamassu) reinforce power and movement; the statues’ five legs (two-legged view vs. side view) create visual cues of motion and forward movement as entrants traverse the gateway.
• The “optical illusion” in Court VIII (Sargon's image elevated relative to approaching figures) demonstrates early awareness of how design can manipulate perception of height and distance.
• The gate system thus embodies a dual aim: control movement and generate particular visual impressions of power and majesty.

Fields of view and isovists: visual perception at Khorsabad

• The study adopts isovists (two-dimensional viewsheds) to analyze what an entrant could see from specific gates and positions within the courtyard.
• Isovists are analyzed at 60° and 90° field-of-view segments to understand how much of the courtyard and surrounding structures would be visible from certain vantage points.
• Findings (Table 1) show substantial differences between actual gate B and a hypothetical symmetrical gate: actual views reveal a larger visible area, changing the perceived size and openness of the space.
• Key metrics (from Table 1):
  • 60° isovist area: From actual Gate B = $A<em>{60}^{actual} = 9{,}620 ext{ m}^2$; From hypothetical symmetrical gate = $A</em>{60}^{hyp} = 7{,}680 ext{ m}^2$; increase = rac{A{60}^{actual}-A{60}^{hyp}}{A_{60}^{hyp}} imes 100 = 25 ext{ ext%}
  • 60° isovist perimeter: actual = $P<em>{60}^{actual} = 470 ext{ m}$; hypothetical = $P</em>{60}^{hyp} = 400 ext{ m}$; increase = 17 ext{ ext%}
  • 90° isovist area: actual = $A<em>{90}^{actual} = 15{,}740 ext{ m}^2$; hypothetical = $A</em>{90}^{hyp} = 12{,}615 ext{ m}^2$; increase = 25 ext{ ext%}
  • 90° isovist perimeter: actual = $P<em>{90}^{actual} = 625 ext{ m}$; hypothetical = $P</em>{90}^{hyp} = 515 ext{ m}$; increase = 21 ext{ ext%}
• These isovist results indicate that the actual layout exposes entrants to a larger and more varied field of view than a symmetrical plan would, amplifying perceived space and complexity.
• The isovists are computed for single-direction entries and do not capture full 360° possibilities; nonetheless, they illuminate how gate placement and courtyard geometry influence perceived scale and openness.
• Perimeters and areas are tied to perceptions of openness, complexity, and axial sightlines; the longer field of view around the actual gate B emphasizes a more expansive experience than a symmetrical arrangement would.
• The analysis also considers how fields of view change with movement along a path, reinforcing that encounter with space is dynamic rather than static.

Light, shadow, and the lightscape of Khorsabad

• Light is a primary variable in Mesopotamian life, affecting orientation, color perception, and mood; shadows are sharp but not deeply dark in the region's harsh sun.
• The paper introduces the concept of a lightscape and argues that darkness and light can be treated as architectural materials that shape perception over a journey through space.
• Mesopotamian architecture often used niched and buttressed facades to create patterned shadows on mudbrick walls; Khorsabad extends this logic into monumental interiors using light/shadow contrasts to drive experiential changes.
• Core example: the tunnel between Gate A and the courtyard; this passage is narrow, shadowed, and directs entrants toward the open courtyard, creating a dramatic contrast of light and dark as one exits into daylight.
• The Gate A tunnel (approximate dimensions):
  • Length: ≈ $L_{tunnel} = 15 ext{ m}$
  • Width: ≈ $w_{tunnel} = 3.5 ext{ m}$
  • Height: not precisely known, but wall sections suggest a tall, arched form; recent reconstructions place height around 4–5 m.
• The sequence from Gate A through the Nabu temple flank and into the courtyard provides a controlled transition: dark tunnel -> shaded interior walls -> bright daylight in the courtyard, with the light’s abrupt return offering a dramatic contrast.
• The tunnel works with other light features (e.g., sunlit plaster/mudbrick surfaces) to produce a dynamic lightscape that would shift with season and time of day.
• Light/shadow manipulation is linked to Lefebvre’s concept of lived space: the space is experienced through daily routines, weather, and season, not merely through plan geometry.
• Other light/shadow strategies include the courtyard walls’ reflective mudbrick surfaces and the interplay of light against dark stonework on select temple buildings.
• The overall effect is not only to create an impression of size but to craft a sequence of visual experiences that oscillate between concealment and display, heightening the sense of monumental authority.

Sound, movement, and acoustic experience

• Sound is treated as a crucial component of space, especially in a predominantly oral society where ritual performance, processions, and daily movement shaped perception.
• The courtyard and passageways would have produced a dynamic soundscape: broad, diffuse sounds from many people moving and talking, contrasted with sharper acoustic effects in narrow tunnels and corridors.
• The Gate A tunnel, with its stone walls, would have produced standing waves and echoes that amplify footsteps and create heightened self-awareness as one transitions from dark to light.
• Corridor 10 (between Courts VIII and III) and Corridor 134 (between Courts VIII and XVIII) are narrow, long spaces lined with reliefs of foreign tribute bearers; they likely amplified footstep sounds and contributed to a distinctive auditory character compared with broader courtyards.
• Characteristics of these corridors:
  • Corridor 10: about 22 m long and ~3 m wide; features include vaulted ceilings (proposed) or stone slabs that could amplify footsteps; reliefs on either side enhance acoustic resonance.
  • Corridor 134: similar width (~3 m) and length (~20 m), connecting different court spaces.
• The contrast between open courtyards and narrow corridors would have produced a varied soundscape: crowds in public spaces versus intimate, echoing experiences in the tunnel and corridors.
• The paper notes that while textual records do not explicitly document deliberate sound design, movement through these spaces would have generated distinct auditory experiences that contributed to the perceived power and distinctiveness of Khorsabad’s citadel.

Light, shadow, and sound as integrated experiential devices

• The combination of light/shadow and sound/ movement creates a multi-sensory experience that heightens the perception of space and power beyond what plans alone can convey.
• The design links perception (what one can see) with movement (how one moves), shaping not only where one goes but how one feels in the space as one travels from restricted to expansive zones.
• The integration of these sensory cues is presented as a coherent strategy for translating imperial ideology into lived experience for users of the monumental complex.

Comparative implications and broader significance

• The Khorsabad citadel demonstrates how asymmetry, space compression, and sensory contrasts can function as a sophisticated system of messaging, not merely a flaw or flaw in planning.
• This approach aligns with a broader shift in archaeology toward multisensory and phenomenological readings of space, arguing that monuments communicate through lived experiences as much as through formal plans and inscriptions.
• The study challenges the assumption that monumental power is always best read through symmetric, plan-based readings and shows that designers could exploit asymmetry to guide perception, control movement, and create unforgettable encounters with space.
• The Khorsabad case also connects to wider debates in urban theory about planned vs. organic cities, suggesting that even planned imperial cities may rely on asymmetrical layouts to achieve particular experiential effects.

Connections to prior work and methodological notes

• The article engages with:
  • Classic discussions of Mesopotamian urban planning (Frankfort; Lloyd; Battini) and their debates about symmetry, axis, and planning ideals.
  • The concept of “isovists” (Benedikt; Batty) to quantify visible space from specific vantage points, and the use of 60°/90° fields of view to model perceptual openness.
  • Giddens’ structuration theory and its bottom-up emphasis on individual agency within social structures; used to frame archaeology as centered on actual human behavior rather than plans alone.
  • Phenomenological approaches to landscape and space (Tilley; Lefebvre) and their applicability to monumental architecture.
• The article builds on prior work applying reception theory and multisensory analysis to other ancient contexts (e.g., Minoan palaces, Late Bronze Age monumental spaces) to argue for a broader, more nuanced interpretation of space in Mesopotamia.

Notable figures and tables referenced

• Fig. 1: Map of northern Iraq showing Khorsabad and related sites (location context).
• Fig. 2: Plan of Khorsabad (citadel and town) illustrating the city’s layout and the placement of the citadels relative to the walls.
• Fig. 3: Plan of the Khorsabad citadel indicating the open western space and key routes; shows the relationship between Gate B, the ramp to the palace, and the Nabu temple.
• Fig. 4: Detail of the Khorsabad courtyard with isovist analyses: (a) 60° isovist, (b) 90° isovist, (c) longest axial lines; showing how actual and hypothetical symmetrical entrances compare.
• Fig. 5: Photograph of the tunnel between the Nabu temple and the palace terrace.
• Fig. 6: Plan view of corridors 10 and 134 and their relation to Courts VIII, III, and XVIII.
• Table 1: Isovist areas and perimeters from actual Gate B and a hypothetical symmetrical gate in the Khorsabad citadel courtyard. Isovist measurements (all in meters):
  • 60° isovist area: From Actual Gate B = $9{,}620 ext{ m}^2$; From Hypothetical Symmetrical Gate = $7{,}680 ext{ m}^2$; % increase = $25\%$
  • 60° isovist perimeter: From Actual Gate B = $470 ext{ m}$; From Hypothetical Symmetrical Gate = $400 ext{ m}$; % increase = $17\%$
  • 90° isovist area: From Actual Gate B = $15{,}740 ext{ m}^2$; From Hypothetical Symmetrical Gate = $12{,}615 ext{ m}^2$; % increase = $25\%$
  • 90° isovist perimeter: From Actual Gate B = $625 ext{ m}$; From Hypothetical Symmetrical Gate = $515 ext{ m}$; % increase = $21\%$
• The table footnote clarifies that all distances are in meters and that the ramp area is treated as flat for isovist calculations.

Practical and ethical implications

• For archaeologists, the Khorsabad case encourages integrating plan-based analysis with ground-level, experiential observations to reconstruct how ancient people lived and moved through monumental spaces.
• The study highlights the ethical imperative to acknowledge sensory experience as part of cultural heritage interpretation, resisting purely visual or text-based narratives.
• Practically, it shows how large-scale monuments can employ asymmetry and sensory modulation to convey political narratives, which is relevant for understanding institutional power, ritual spaces, and urban design in ancient empires.

Summary of takeaways

• Monuments convey power not only through size and symmetry but through the lived experience of movement, perception, light, shadow, and sound.
• Khorsabad’s asymmetrical citadel demonstrates that complex, memorable experiences can be produced by controlled movement, variable visibility, and dramatic sensory contrasts.
• Ground-level analyses, including isovists and light/shadow/sound studies, provide crucial insights into how users encountered and interpreted monumental architecture in ancient Mesopotamia.
• A multisensory, experiential approach complements traditional plan-based readings and aligns with broader methodological trends in archaeology toward the study of perception, space, and social practice.