Las Vegas is one of the most incredible places to visit when it comes to Photography. Not only does the Vegas Strip have some of the most beautiful architecture you will ever see, but all of Vegas is surrounded by beautiful mountains and a massive desert.
If you're into street photography, you will find no better place. The range of characters you will see from cowboys to aliens is scattered all across Vegas with some of the best backdrops you can ask for.
Hotels can be very touchy when it comes to photography so be sure to ask ahead of time if it's ok. I was declined from bringing my camera to a few roof top bars even though the views were incredible.