277 Park Avenue, 1962.

This Emery Roth & Sons office tower is a quintessential example of the modernist steel and glass towers that sprung up along Park Avenue in the late 50s through the 60s. This building is still owned by the Stahl Organization, the original developer of the project. The tower has 1.74 million square feet of office space spread over 50 stories. The famed architecture firm Emery Roth & Sons were known for "marketable designs that maximized the net rentable area," particularly after World War 2.

This block-spanning lot had previously been occupied by a McKim Mead & White apartment building, though it was never meant to stand the test of time. In order to prepare for Midtown's development as a business district, the New York and Harlem Rail Road Company, who owned the lot at the time, had a foundation poured that could support a 75-story tower.