It's very hot and humid, so bring lots of water. We took a tour, since it was free for doing a presentation through another timeshare. However, there is a lot to see and do that the tour time didn't allow for. We were able to climb the pyramid 96 steep steps up; coming down was scary. You can also climb 69 steps in the inner pyramid, but beware - it's HOT, at least 100 with no circulation of air and, if you’re claustrophobic, I wouldn't attempt to. Once you reach the top there are two statues; take your camera if you go. There is also a cenote onsite and a lost city you can see in the distance. It's a long drive there, but you go through a lot of Mayan towns and can see how the people lived.