Slaughter, I think there are hundreds--maybe thousands--of ruins in the Mesa Verde area. The Park runs ranger-guided tours through the "Cliff Palace"--you can get close but don't touch. Another extensive ruin, the Spruce House is a self-guided tour, with a couple rangers on duty. At the Spruce House you could enter a kiva--thought to be used for religious ceremonies. Here is a picture of my wife, Nancy, climbing down into one.
There are many other ruins, and I am sure that at the smaller ones you can walk around freely. They don't want you to touch anything because, as with a painting, your skin oils will ultimately damage the structures.
Southwestern US is a spectacular place to visit--kayaking is minimal, unless you want to do whitewater--lots of that. You can kayak great places like Yellowstone Lake and a few other similar places.
If you are in the US during our summer time, we are usually out here. You have a invitation to stop by and visit.