Of all the experiences in Arizona, my favorite by far was the sightseeing tour I did with Viator to Antelope Canyon and Horseshoe Bend in Page, Arizona. I went solo and it ended up being such a beautiful, peaceful experience. The trip includes a professional tour guide, pickup and dropoff, and a stop at a Navajo trading post where you can shop souvenirs.
You also drive along Route 66 with the most arresting views of the Sonoran Desert and lots of interesting historical tidbits from your tour guide (my guide, Mark, was incredible!). It's another long trip, but didn't feel like it thanks to the view. As for the sightseeing, I'll never get over how beautiful the Horseshoe Bend is; Pinterest pictures didn't do it justice. And Antelope Canyon is truly one of the world's great natural wonders. You have to go down a lot of stairs to enter the canyon and it can be tight in certain places, but overall, I found it easy to navigate. It does require a moderate physical fitness level though, so keep that in mind.
