Sportime Randall's Island Tennis Center

The John McEnroe Tennis Academy (JMTA) is a tennis academy founded by tennis Hall of Famer John McEnroe in New York City. The academy was founded in September 2010, on a 20-court (10 deco turf, 10 clay courts) $18 million tennis complex, designed by Ricardo Zurita, on Randalls Island in Manhattan. McEnroe launched the academy in collaboration with Claude Okin, managing partner of Sportime New York. McEnroe's teaching philosophy emphasizes short intense periods of tennis training balanced by plenty of time pursuing other sports and activities.Alumni include Noah Rubin, who won the Boys' Singles tournament at Wimbledon in July 2014, and the 2014 U.S. Tennis Association's Boys 18s National Championships in both singles and doubles the following month, is a product of the academy. In September 2014, Rubin was ranked the No. 1 Division 1 college freshman by the Intercollegiate Tennis Association (ITA) while playing for Wake Forest University, and sophomore Jamie Loeb – another product of the academy – was named the No. 1 Division 1 female college player while playing for University of North Carolina at Chapel Hill.

The New York House of Refuge was the first juvenile reformatory established in the United States. The reformatory was opened in 1824 on the Bowery in Manhattan, New York City, destroyed by a fire in 1839, and relocated first to Twenty-Third Street and then, in 1854, to Randalls Island.Through its 111-year history the reformatory was privately funded, receiving only guidance, supervision and additional funding from state agencies. Beginning in 1901 female inmates were removed to the newly opened New York State Reformatory for Women, now the Taconic Correctional Facility. In the 1930s, younger male inmates (ages 12 to 15) were transferred to the new state training school at Warwick, and the older boys to the newly constructed state prison in Coxsackie. The House of Refuge closed on May 11, 1935.

Downing Stadium, previously known as Triborough Stadium and Randall's Island Stadium, was a 22,000-seat stadium in New York City. It was renamed Downing Stadium in 1955 after John J. Downing, a director at the New York City Department of Parks and Recreation. It was demolished in 2002 and the current Icahn Stadium was built on the site.

Icahn Stadium is a 5,000 seat track and field and multipurpose facility located on Randalls Island in Manhattan, New York City. Designed within the former site of Downing Stadium, it opened on April 23, 2005. Icahn Stadium is named after American businessman Carl Icahn, who made a $10 million donation towards the construction of the new stadium. The stadium features a World Athletics Class 1 certified running track with a 400-meter Mondo Super X Performance surface, and it has been the site of many international, national, and regional track and field events.

The Bronx Kill is a narrow strait in New York City delineating the southernmost extent of the Bronx. It separates the Bronx from Randalls Island. It connects the Harlem River to the East River.

Randalls Island (sometimes called Randall's Island) and Wards Island are conjoined islands, collectively called Randalls and Wards Islands, in New York County, New York City, separated from Manhattan Island by the Harlem River, from Queens by the East River and Hell Gate, and from the Bronx by the Bronx Kill. The two islands were formerly separated, with Randalls Island to the north of Wards Island. The channel between them, Little Hell Gate, was infilled by the early 1960s. A third, smaller island, Sunken Meadow Island, was located east of Randalls Island and was connected to it in 1955. The island had a population of 1,648 living on 2.09 square kilometers (520 acres) in 2010. Most of the island is parkland, spanning a total of 432.69 acres (175.10 ha), and managed by Randall's Island Park Alliance. The park offers 91 athletic fields, a driving range, greenways, playgrounds and picnic grounds. The island also has a history of being used for asylums, hospitals, and cemeteries, and is currently home to several public facilities, including a psychiatric hospital known as the Manhattan Psychiatric Center, Kirby Forensic Psychiatric Center a Drug and Alcohol Treatment facility named Odyssey House, a daycare, 2 state police stations, FDNY fire academy, a DEP wastewater treatment plant, Icahn Stadium, HELP Clarke Thomas Mens Homeless Shelter, Keener Employment Homeless Mens Shelter, Schwartz Homeless Mens Shelter, HELP USA Supportive Employment Center, and an Urban Farm. Outside of these institutions and buildings, there is no residential housing for the general public on the island. The island is crossed by the Triborough and Hell Gate bridges. The island can be reached by the Triborough Bridge; the Wards Island Bridge, which serves pedestrians and bicyclists and links the island to East Harlem in Manhattan; or by the Randalls Island Connector, a pedestrian and cycling bridge crossing the Bronx Kill and connecting to the Port Morris neighborhood of the Bronx. Randalls Island is the home of three music festivals: Governors Ball Music Festival, Panorama Music Festival, and Electric Zoo Festival.

The Charles Poletti Power Project was a power station located in northeastern Queens, named after politician Charles Poletti. An 885-megawatt oil and natural gas-fired facility originally known as Astoria 6, it started generating electricity in 1977, and was gradually phased out starting in 2002, replaced by a newer, cleaner facility on the same site in 2005, Astoria Energy. The plant was shuttered in 2010 following a lawsuit and years of community opposition. It was one of the dirtiest power plants in the state while it was operating, and pollution from the plant was said to contribute to high rates of asthma in the surrounding neighborhood of Astoria, giving it the nickname "Asthma Alley". In 2021, New York State approved a plan to build a 100-megawatt battery system, the East River Storage System, on the site, in order to store and discharge renewable energy.

The Oak Point Link, also known as the South Bronx–Oak Point Link, is a 1.9-mile (3.1 km) long railroad line in the Bronx, New York City, United States, along the east bank of the Harlem River. It connects the Metro-North Railroad's Hudson Line (on the Spuyten Duyvil and Port Morris Railroad section) with the Harlem River Intermodal Yard and the CSX Transportation Oak Point Yard at the north end of the Hell Gate Bridge.

The Hell Gate Bridge, originally the New York Connecting Railroad Bridge or the East River Arch Bridge, is a 1,017-foot (310 m) steel through arch railroad bridge in New York City. Originally built for four tracks, the bridge currently carries two tracks of Amtrak's Northeast Corridor and one freight track across the Hell Gate, a strait of the East River, between Astoria in Queens and Randalls and Wards Islands in Manhattan. The arch across the Hell Gate is the largest of three bridges that form the Hell Gate railroad viaduct. An inverted bowstring truss bridge with four 300-foot (91.4 m) spans crosses the Little Hell Gate, a former strait that is now filled in, and a 350-foot (106.7 m) fixed truss bridge crosses the Bronx Kill, a strait now narrowed by fill. Together with approaches, the bridges are more than 17,000 feet (3.2 mi; 5.2 km) long. The designs of the Tyne Bridge in Newcastle, England and the Sydney Harbour Bridge in New South Wales, Australia were derived from the Hell Gate Bridge.

Kirby Forensic Psychiatric Center is a maximum-security facility for the mentally ill on Wards Island in New York City, operated by the New York State Office of Mental Health as one of two psychiatric hospitals in the state that treat felony patients. The building, described as "fortresslike", is adjacent to the Manhattan Psychiatric Center. Of its more than 200 patients, 50 are deemed criminally insane; it houses pre-trial detainees unfit to stand trial as well as convicted defendants granted an insanity plea. Among its famous historical inmates was murderer and cannibal Daniel Rakowitz.

The Manhattan Psychiatric Center is a New York-state run psychiatric hospital on Wards Island in New York City. As of 2009, it was licensed for 509 beds, but holds only around 200 patients. The current building is 17 stories tall. The building strongly resembles the main building of the Creedmoor Psychiatric Center in Queens. It is adjacent to Kirby Forensic Psychiatric Center, a specialized facility for patients with criminal convictions.

The removal of obstructive rocks from Hell Gate, a narrow tidal strait in New York City's East River and a major water transportation route, began in 1849, when French engineer Benjamin Maillefert, cleared some of the rocks. Then in 1851, the U.S. Army Corps of Engineers, led by General John Newton, began to do the job, in an operation which was to span 70 years. On September 24, 1876, the Corps used 50,000 pounds (23,000 kg) of explosives to blast the rocks, which was followed by further blasting. The process was started by excavating under Hallets reef from Astoria. Cornish miners, assisted by steam drills, dug galleries under the reef, which were then interconnected. They later drilled holes for explosives. A patent was issued for the detonating device. After the explosion, the rock debris was dredged and dropped into a deep part of the river. This was not repeated at the later Flood Rock explosion. On October 10, 1885, the Corps carried out the largest explosion in this process, annihilating Flood Rock with 300,000 pounds (140,000 kg) of explosives. The blast was felt as far away as Princeton, New Jersey (50 miles). It sent a geyser of water 250 feet (76 m) in the air. The blast has been described as "the largest planned explosion before testing began for the atomic bomb", although the detonation at the Battle of Messines in 1917 was larger. Some of the rubble from the detonation was used in 1890 to fill the gap between Great Mill Rock and Little Mill Rock, merging the two islands into a single island, Mill Rock.