Walnut Canyon National Monument
Learn about the Sinagua people who called Walnut Canyon home for 800 years ago. There is a museum onsite but the highlight of the visit is the loop trail that takes you down into the canyon. Once in the canyon, you'll get up close with the dwellings built into the canyon to shelter the community from the weather. The loop is a mile long and it does require climbing many sets of stairs. If stairs aren't your thing, you can still view the canyon and some of the dwellings from the top but you'll be missing out on what makes this park fun to visit.
Tips: I'd recommend visiting the canyon if you have kids that don't mind climbing a lot of stairs. The path in is easy as you're climbing down several flights of stairs but once you complete the loop, you'll need to climb back up and that could be tough for smaller kids. My kids were 9 and 12 when we visited and they handled it fine. My daughter even challenged me to a race back up. We were pretty tired once we reached the top, and yes, she won.