The MetLife Building is a skyscraper at Park Avenue and 45th Street, north of Grand Central Terminal, in the Midtown Manhattan neighborhood of New York City. Designed in the International style by Richard Roth, Walter Gropius, and Pietro Belluschi and completed in 1962, the MetLife Building is 808 feet (246 m) tall with 59 stories. It was advertised as the world's largest commercial office space by square footage at its opening, with 2.4 million square feet (220,000 m2) of usable office space. As of November 2022, the MetLife Building remains one of the 100 tallest buildings in the United States.

The Main Concourse is the primary concourse of Grand Central Terminal, a railway station in Midtown Manhattan, New York City. The space is located at the center of the terminal's station building.