Continuity mistake: In the establishing shot of the San Francisco skyline, the building appears to be located off Market Street and facing the viewer (elevator tracks facing the front of the building). In a night-time shot from the Bay Bridge, the building has "turned around" and faces the other way.
Continuity mistake: During the explosions of the water tanks on the top floor, if you look closely as the miniatures explode, part of the floor is already broken and falls apart a second before the explosives go off.
Continuity mistake: In the early part of the TV version. They are holding a meeting in Mr.Bigelows' office regarding Romane Conti. He asked a gentleman from Phoenix on the phone if he could get the wine. Then told his assistant "go get it". A flight plan would have to be filed,and the flying time from SFO to PHX is about 2 hours. Then to find the place where he has to get the Romane Conti. I lived in the Phoenix area for almost 13 years and it is spread out. Then get back to the airport,another 2 hour flight. I would say the fire department would have gotten there first.
Continuity mistake: Roberts rings Duncan and tells him Will Giddings has suffered burns and there is a fire in the building. We hear the whole conversation and Duncan ends it by saying, "A fire in a storage room on 81 can't hurt us up here," but Roberts never mentioned where the fire is.
Continuity mistake: When Doug first arrives at the Tower, he goes down an elevator from the roof to the 65th floor, then has to cross over to different elevators. In one of these, he goes up - to 79 according to the display; but the floor buttons on the control, consist of just 16 buttons; the 7th or 8th button is lit as he gets off, so he has only gone up halfway to 79.
Continuity mistake: When the first woman goes across on the breeches buoy, the overhead shot of her going across does not show the outside elevator which at this stage is hanging by a cable and stuck on the outside. However, it is visible in the shots from the peerless building which the breeches buoy is attached to.