Where is the building on the cover of led zepplins physical graffiti?

The building featured on the cover of Led Zeppelin's "Physical Graffiti" is located at 96 and 98 St. Mark's Place in New York City's East Village. This historic brownstone was originally built in the early 20th century and has become iconic due to its association with the album. The cover art showcases the building's unique facade, which has been left partially open to reveal the inner workings of the apartments.