Manhattan – Flatiron District
E 20th St to E 21st St bet Gramercy Park West and Gramercy Park East
Manhattan, NY 10010
This walled, two-acre park is one of New York's most exclusive green spaces (Sunnyside Garden in Queens is NYC's only other private park). Only residents of the 39 buildings directly surrounding the park can access it. If you can't afford property on the park, don't fret—guests of the Gramercy Park Hotel and the National Arts Club can access keys, and the park is open to the public every Christmas Eve.