770 Broadway is a 1,200,000-square-foot (110,000 m2) landmarked mixed-use commercial office building in NoHo, Manhattan, in Lower Manhattan, New York City, occupying an entire square block between 9th Street on the north, Fourth Avenue to the east, 8th Street to the south, and Broadway to the west.

[7] 770 Broadway was built between 1903 and 1907 and was designed by Daniel Burnham as an annex to the original Wanamaker's department store in New York, which was across 9th Street to the north.

The building originally included a central court and an auditorium with a pipe organ that hosted top musicians and orchestras, and was also an early television studio.

In 1956, a fire gutted the original Wanamaker's department store building while it was under demolition, injuring 77 people.

[16] Facebook Inc. (later Meta) gradually leased space in the building, occupying most of the structure, or about 813,000 square feet (75,500 m2), by the early 2020s.