Turtle Bay is a neighborhood in New York City, on the east side of Midtown Manhattan. It extends from roughly 43rd Street to 53rd Street, and eastward from Lexington Avenue to the East River's western branch. The neighborhood is the site of the headquarters of the United Nations and the Chrysler Building. The Tudor City apartment complex is next to the southeast corner of Turtle Bay. Turtle Bay is named after a former cove of the East River.