Principal photography began on June 11 , 2001 and ended on September 23 , 2001 . The climax of the story was originally filmed against a backdrop of the twin towers of the original World Trade Center ; but after the September 11 attacks , the climactic scene was refilmed . Other scenes incorporating views of the twin towers likewise had to be edited , or reshot
September 11 attacks
September 11 attacks
Men in Black II