I've found what is by far the best activity you can do in Vegas that doesn't involve games of chance or Cirque du Soleil.
When I took my wife on a mystery adventure for her birthday, my expectation had been for hokey actors, easy to solve riddles and a lack of interactivity.
But the actual mystery adventure was far from that. It was truly like becoming a detective - not just in some fictional "CSI" or "Law and Order," but like were true-blue detectives on the case.
You are taken to real sites investigating crime scenes, gathering clues and trying to solve the case with the help of your fellow detectives.
If there is one thing you do in Vegas, don't pass up the clues to this hidden gem.