Robert Moses Playground is a 1.3-acre (0.53 ha) playground and park in Manhattan, New York City. It is located in the Murray Hill neighborhood on First Avenue between 41st and 42nd streets, immediately south of the headquarters of the United Nations. The park is named for New York's "master builder" Robert Moses, the former head of the Triborough Bridge and Tunnel Authority (which constructed the playground as part of the construction of the Queens–Midtown Tunnel), who later advocated to save the park when a skyscraper was proposed on the site in the early 1980s.