In terms of production cost, Cleopatra is a superlative movie hard to be matched. The thousands of custom-made, exuberant items makes it seem like a Disney cartoon came to flesh.
The script, notably chopped and abridged, provides some good moments, and the actor's deliveries, particularly by Elizabeth Taylor, are a show by their own. The final hour, though, with its long battle scenes, are as impressive, but not as interesting.
It has also some awful moments, though. Apart from the historical inaccuracies, dated orientalism, etc., "rape, murder, pillage thousands, millions of human beings, but neither you nor any other barbarian has the right to destroy one human thought!" is an disastrous word choice to come from the mouth of a protagonist.