How many buildings collapsed at Ground Zero?

[Random Variable]

For a long time I thought it was three (the two towers and WTC #7). But on MSNBC they were talking about other buildings that collapsed (or were at least irreparably damaged).

 

[StattlichPassat]

At least 4- remember the hotel that was at the base and between the two towers. The Mariott at the World Trade Center. I stayed there for a few nights in '98.

EDIT: ^ WTC #3

 

[Scootin159]

Originally posted by: Vespasian
For a long time I thought it was three (the two towers and WTC #7). But on MSNBC they were talking about other buildings that collapsed (or were at least irreparably damaged).

There is actually about 10 buildings that suffered severe damage, but I think only(?) about 4 or 5 totally collapsed or were damaged beyond repair.