Union Square Park, 1902.

In 1815, the former potter's field at the intersection of Bowery and Bloomingdale Road (Broadway) was designated Union Place, a public commons. Official establishment as a park came in 1833, and re-designed in 1839 to adopt the spirit of the public spaces dotting the London city map.

Development in the surrounding neighborhood accelerated during the middle decades of the 19th century, as Manhattan's fashionable residential and commercial districts shifted uptown. In 1872, Frederick Law Olmsted and Calvert Vaux, the celebrated landscape architects behind Central Park and Prospect Park, were enlisted to redesign Union Square. The Olmsted and Vaux design is still evident in today's park, with its emphasis on space for public assembly and greenery.