The diversity of the nation's cities was nowhere more on display than in the nation's largest city, New York. At the turn of the twentieth century New York City was the national capital of finance, industry, shipping and trade, publishing, the arts, and immigration, a magnet that drew to it much of the best and most avant-garde in art and literature. With a population of more than three million in 1900 and 4.7 million by 1910, New York was more than twice as populace than Chicago, the nation's second-ranked city, three times as large as third-ranked Philadelphia, and six to nine times as large as St. Louis, Boston, Baltimore, and Cleveland, all urban centers of immigrants. \n \n Photograph of Mulberry Street in New York City, 1900. The street is very busy, full of people and carts and vendors. \n \n Mulberry Street in New York City, c. 1900. Image courtesy Library of Congress. \n \n By 1910, New York's millionaires had built palatial mansions along much of Fifth Avenue, while, at the same time, many New Yorkers lived in poverty. The Lower East Side was the most crowded neighborhood on earth, housing tens of thousands in ill-lighted, overcrowded tenements, many without running water, flush toilets, or electricity. An 1893 observer in this section of the city wrote of the "fermenting garbage in the gutter and the smell of stale beer" and the sight of exhausted sweatshop workers toiling away, sewing clothes for the garment industry.