The Eiffel Tower is a fun ride in a glass elevator to an observation deck with a view of the entire city all the way to the mountains. We were lucky enough to be in the perfect spot when the water show at the Bellagio started so we had a bird's eye view of the whole thing. That was pretty cool. Make sure you use a buy one get one free coupon in the 24/7 books found in all the cabs. Otherwise, this can end up being a pretty expensive elevator ride.