Antelope Canyon & Horseshoe Bend
One can't travel through Arizona and NOT see these two amazing natural wonders. There's barely any hiking involved, and they can both be seen in just a few hours. In other words, you have no excuses - go check it out!
What do you get when you have orange and red sandstone and years and years of flash flooding? Probably one of the most beautiful places you'll ever see in your life. I'm not joking. The walls of sandstone are so smooth, it's hard to believe that mother nature made this place on her own. With the light shining in on the walls from above, there are tons of photo ops. There's actually two Antelope Canyons - an upper and a lower. You're required to take a tour when seeing either one, but you can normally walk right in, sign up and head out on a tour within an hour. In my opinion, lower canyon is better. There's more beautiful, smooth features in the lower than the upper canyon. Don't forget your camera!
A photo is worth a thousand words, so rather than reading my insufficient description, take a look below. Just a hop, skip and jump (a short drive) away from Antelope Canyon, there is no tour guide needed here and it's just a short hike to the edge. There will be tons of people, but if you hike off to the far left or right, you'll finally get some peace and quite (and better photos too).