Chelsea in Manhattan in New York County, New York — The American Northeast (Mid-Atlantic)
Chelsea Green
What was here before?
The site of this pocket park was once Grammar School No. 55, built in 1865 to accommodate a booming population. The neoclassical schoolhouse taught hundreds of boys and girls from the Sixteenth Ward in separate wings. The school closed around the turn of the century, was later demolished demolished, and became a site of Department of Street Cleaning, which would later become the Department of Sanitation (DSNY).
Chelsea was very industrial with little to no open space for more than a century. The area was revived with the landmarking of the nearby Ladies Mile district in the late 1980s, the burgeoning art gallery district to the west, and a large LGBTQ+ presence. As the community became a more attractive place to live, the need for more parkland grew.
How did this become a park?
In 2010, the Friends of 20th Street Park formed to advocate for green space in their community. The DSNY facility site was in a prime location to give the community between Fifth and Eighth Avenues a park within ten-minutes walking distance. In 2015, the land was transferred to NYC Parks. With support from over 4,000 residents and various community groups including the Council of Chelsea Block Associations, New Yorkers for Parks, Save Chelsea, Flatiron Alliance, NYC Park Advocates, and many local politicians, Chelsea Green became a reality.
This quarter-acre community hub located on West 20th Street between Sixth and Seventh Avenues provides numerous functions for residents. The park features an engaging play area with shaded seating and a lawn made from synthetic turf. In keeping with the artistic nature of the neighborhood, an area of the park is a dedicated space for performances and displays of public art.
Chelsea Green, opened in 2019, was the first new park built in the Chelsea neighborhood in 40 years. Grassroots efforts from a tight-knit community created this much-needed green oasis that will be enjoyed by all for many years to come.
What is this park named after?
The park takes its name from the surrounding neighborhood. Chelsea, which became the official name of the neighborhood after retired British Major Thomas Clarke in 1750 bought 94 acres of land and named the property after a veterans hospital in Britain.
Erected by NYC Parks. (Marker Number 300.)
Topics and series. This historical marker is listed in these topic lists: Education • Industry & Commerce • Parks & Recreational Areas • Settlements & Settlers. In addition, it is included in the NYC Parks series list. A significant historical year for this entry is 1865.
Location. 40° 44.503′ N, 73° 59.763′ W. Marker is in Manhattan, New York, in New York County. It is in Chelsea. It is on West 20th Street west of Sixth Avenue, on the left when traveling west. Touch for map. Marker is at or near this postal address: Chelsea Green, New York NY 10011, United States of America. Touch for directions.
Regionally, this marker is in New York City. It is also in the American Northeast and in the Mid-Atlantic. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once New Netherland and also one of the original Thirteen Colonies.
Other nearby markers. At least 8 other markers are within walking distance of this marker: the Caroline (approx. 0.2 miles away); The New York Foundling Hospital (approx. 0.2 miles away); Shirley Clarke (approx. 0.2 miles away); Virgil Thomson (approx. 0.2 miles away); Sir Arthur C. Clarke (approx. 0.2 miles away); James Schuyler (approx. 0.2 miles away); Brendan Behan (approx. 0.2 miles away); David Dubinsky (approx. 0.2 miles away). Touch for a list and map of all markers in Manhattan.
Also see . . . Chelsea Green. NYC Parks website entry (Submitted on July 12, 2025, by Larry Gertner of New York, New York.)
Additional keywords. LGBT, LGBTQ, 🏳️🌈
Credits. This page was last revised on July 12, 2025. It was originally submitted on July 12, 2025, by Larry Gertner of New York, New York. This page has been viewed 84 times since then and 15 times this year. Photos: 1, 2. submitted on July 12, 2025, by Larry Gertner of New York, New York.

