Based on the rules of the Sliding Timescale of Earth-616 all appearances of the original Twin Towers and all references to the terrorist attacks on September 11, 2001 as having taken place during the modern age of heroes should now be considered topical references.
As stated above, any specific dates mentioned to quantify time during the modern age should be considered topical as opposed to factual.
In Earth-616 the World Trade Center appears to have fallen to terrorists during an attack on the Financial District of Manhattan in New York City, before being rebuilt years later as One World Trade Center.
The World Trade Center has been the backdrop and a landmark of many adventures in New York City. For example, the Avengers fought Zodiac on top of the World Trade Center. The battle, and in particular the Vision's actions, severely damaged the outer facade. After the skirmish, the Assemblers worked diligently on repairs with the Mighty Thor holding the foundation in place.
Peter Parker, Mary Jane Watson, and Flash Thompson had dinner at least once at the World Trade Center. Spider-Man also would stick on the side of the World Trade Center whenever he was thinking or just resting.
- During 9/11, many villains were seen at the World Trade Center as well, such as Doctor Octopus, Kingpin, and Magneto, simply standing there. Dr. Doom was seen crying, a very rare occurrence.
- 166 appearance(s) of World Trade Center
- 9 minor appearance(s) of World Trade Center
- 12 mention(s) of World Trade Center
- 11 image(s) of World Trade Center