I've been casually asking this question all day, and a majority of the responses I get are "no." This is horrifying to me. World Trade Center Building 7 collapsed around 6 PM on the evening of 9/11, supposedly due to internal "office fires." However, many scientists, architects, physicists, etc. Have come forward stating that such an event is almost literally impossible. According to these researchers, it appears that the building was brought down by a controlled demolition.
The fact that most people are totally unaware that this building even fell is evidence enough that something is being hidden.
From my remembrance, the city engineers of New York City decided to have the building "pulled" meaning that the building already had a way to self-destruct at the push of a button. The City of New York decided to bring it down and they did. Wonder what else happened, hmm?
Yes, I knew a third tower fell on 9/11, because it was right by the World Trade Towers. The tower fell at the end of the day because it had been so badly damaged by all of the trauma of the day. It was a large building too, with many stories, even though it did not seem significant compared to the twin towers.