Great Commentary Track
The director's commentary track on the DVD is outstanding and answers many of the questions I see posted here. He talks extensively about the sets and locations, production design and the lack of security/safety. They apparently were lucky they did not have multiple accidents and fatalaties especially during the final tower burning scenes. One actor did die of natural causes right after filming.
The movie is not one of my favorites but the commentary track is, so fans should definitely check it out.