'Cleopatra,' starring Elizabeth Taylor and Richard Burton, is considered to be an iconic movie. Because it's iconic, people tend to assume that it must have been a runaway success, which is a mistake. Like 'The Golden Compass,' it didn't do badly, but so much money had been spent on it by the time it was released that it had virtually no chance of making a profit. That's despite the fact that the film almost marketed itself, thanks to the fascination of the press at the time around what may or may not have been going on between Burton and Taylor.
The big tragedy here is that much of the $44m budget - $330m today - was spent on scenes that ended up on the cutting room floor. The initial edit was six hours long, and so 20th Century Fox had to get the scissors out and cut away over forty minutes of very expensive footage. When it made less than was projected, Fox temporarily closed, laying off staff and cutting back on expenses wherever possible. They eventually reopened in a diminished state, taking years to make a full recovery.