4 buildings actually collapsed, the two twin towers, hit directly by separate aircraft, this hotel in between them, and wtc 7 little under 300 feet away.

The New York Marriott World Trade Center, also known as 3 World Trade Center, was a 22-story, 825-room hotel in New York City, within the original World Trade Center complex in downtown Manhattan. Wikipedia

Destroyed by: Structural failure, Terrorist Attack

Floors: 22

Destruction date: September 11, 2001

Opened: 1981