Union Square is now a beloved spot for al fresco lunches, high-octane protests and farmers markets. But it took a long time to reach today's cheery, sunny status. Until 1831, the square was a graveyard for unidentified bodies, and didn't enjoy the fruits of its revamp to public park until the 1860s, when labor and union organizers started staging protests. Designed by the planners of Central and Prospect Parks Frederick Law Olmstead and Calvert Vaux, Union Square became a cosmopolitan hub by the 1870s.
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Today, it remains the city's essential gathering spot for activists and organizers, and a nexus point between the East Village, Flatiron and Gramercy neighborhoods. And the park is never without things to do. You can head to the Greenmarket on Mondays, Wednesdays, Fridays and Saturdays (8am–6pm) year-round; visit the holiday market come wintertime; and enjoy free movies, boot camps and beyond with Citi Summer in the Square.
To find out more about things to do, see, eat and drink in Manhattan, and discover other neighborhoods in the area, visit our Manhattan borough guide.