There are plenty of places to spend plenty of money in Vegas. These aren't any of those places. These are the spots where you can have tons of fun without ever opening your wallet. Watch water dance in a fountain show that's as exquisitely choreographed as a professional ballet. Or lights that fly to music above your head on the world's largest LED screen. You can even witness the fall of Atlantis, see a volcano erupt and tour a chocolate factory in one afternoon. Plus you can do it all without ever buying a ticket. Priceless.