The Fall of Atlantis Fountain Show can be found inside Caesars Palace Forum Shops. Every hour on the hour you can see the lifelike animatronic figures tell the story of Atlantis, beginning with King Atlas deciding which of his children shall rule the city.
From what I've read about this show, it must be awesome to see, with Atlantis being destroyed by fire and water with the gigantic beast watching over the city.
This is one of the free attractions that can be viewed in Vegas. I'm sure it is worth stopping by to check it out.