buildings in 1899. With 4,400 patients, it was the largest psychiatric institution in the world. The 1920 census notes that the hospital had a total of 6,045 patients. It later became the Manhattan Psychiatric Center. Infill operations When the Triborough Bridge opened in 1936, it spurred the conversion of both islands to parkland. At the time, Little Hell Gate separated Randalls and Wards Islands. Around the late 1930s, Little Hell Gate began to be narrowed using infill to make room for an expansion of the parks. By the early 1960s, the islands were connected. There was also formerly another small island, Sunken Meadow Island, to the east of Randalls Island. It was infilled starting in 1955 when the city allowed construction companies to dump debris in between the islands for free. The former island is now part of Sunken Meadow. The Sunken Meadow section of the Randalls Island Park, which was essentially completed by 1965, comprises and contains ball fields. Sunken Meadow also contains the infilled portion of Little Hell Gate. Scylla Point In 1984, the point at the southeastern tip of the island was officially designated "Negro Point", based on the unofficial usage of riverboat workers. The United States Geological Survey and the National Oceanic and Atmospheric Administration used that name. It still appears on charts of the area today. In 2001 the Parks Commissioner Henry Stern, upon learning of the name, thought it was offensive. He changed the name to "Scylla Point" and paired it with Charybdis Playground in Astoria Park; the two features are on opposite sides of Hell Gate, just as the mythological monsters of Scylla and Charybdis were on opposite sides of the Strait of Messina. Despite the name change Negro Point is still used by tug captains and mates as they sail past the area. Parks Proposals to add parks to the islands were made as early as 1916, but park development was truly kicked off by the 1930 Metropolitan Conference of Parks, which recommended transforming them into recreational parks. Randalls Island Park is operated by the Randall's Island Park Alliance (RIPA), a public-private partnership founded in 1992 as the Island Sports Foundation. Randalls Island Park Alliance works with the City and local communities to provide sports venues, cultural events and environmental exploration. RIPA runs free youth programs at the Park, bringing thousands of children to the Park annually for a range of sports