Miscellaneous: During the romantic barge scene, where Antony first makes love to Cleopatra, as the camera pulls further back, we see slaves in the galley pulling at the oars. When the barge is shown from the outside, no oars are visible, and the barge seems to be traveling under its own power.
Revealing mistakes: As you look at Pothinos' chariot as it comes at you the horse in the right side is a good hand shorter than the horse on the left.