O’Neill Triangle
The identity of O’Neill Triangle’s namesake is something of a mystery. The Board of Aldermen named it O’Nei...

O’Connell Playground
This park is named after Daniel M. O’Connell (1900-1918), a native of New York City who gave his life for his country in...

O’Connor’s Tail
Frank D. O’Connor (1909-1992), for whom this park is named, had a remarkable career in public life that spanned four dec...

O'Brien Oval
This oval honors Captain Thomas A. O’Brien (1884- 1918), who grew up nearby at 280 Burnside Avenue. He was killed o...

Oak Ridge
Standing in a grove of red and black oaks, Oak Ridge is located on the crest of the Harbor Hill Moraine (a mass of rock formed...

Oakland Gardens
This playground takes its name from the northeastern Queens neighborhood in which it stands.  The neighborhood of Oakland...

Oakland Lake
Located in the northeast corner of Queens between the neighborhoods of Bayside and Oakland Gardens, Oakland Lake is a 15,000-y...

Ocean Hill Playground
What was here before?This property belonged to brothers Jacob H. and Henry Sackman, German immigrants from Hamburg who settled...

Ocean Parkway
What was here before?The Ocean Parkway Malls traverse several neighborhoods, including (from north to south) Kensington, Midwo...

Ogden Plimpton Playground
This playground takes its name from two avenues that border the property: Ogden Avenue and Plimpton Avenue. The park is also b...

Old Fort Four Park
What was here before? This site was once part of the Jerome Park Racetrack between 1876 and 1890. The track was closed to m...

Old Hickory Park
Andrew “Old Hickory” Jackson (1767-1845) was the seventh president of the United States. He earned the nickname, w...

Old Town Playground
What was here before? This site housed the first European settlement on Staten Island, Old Town. Dutch fishermen and farmer...

Olinville Playground
This playground bears the name of the Bronx neighborhood of Olinville, named after the author, professor and Methodist bishop,...

Oliver Hazard Triangle
This triangle, located in the Queens neighborhood of Maspeth in the shadow of the Long Island Expressway, is named in honor of...

Olmstead Triangle
Olmstead Triangle and the adjacent Avenue honors the Olmsteads. Settlers of Westchester Village, their gravestones remain in ...

Olmsted Center
What was here before? This facility sits on land that was once a tidal marsh plied by Native Americans, later fished by ear...

One Room Schoolhouse Park
Queens’ last one-room schoolhouse occupied this site from the time of its construction in 1879 until its demolition to m...

Oneida Triangle
Neighbor to 1,146.43 acre Van Cortlandt Park, Oneida Triangle is bounded by East 238th Street, Van Cortlandt Park East, and On...

Oracle Playground
Oracle Playground is named for its proximity to Adelphi Street, which runs to the west of this site. The word Adelphi has gre...