The Mayan archaeological site of Palenque lived up to its reputation. The amount of structures at the site is astounding and they've only unearthed a small portion of the buildings. The best part is that you're given more or less free access to climb and explore the ruins. Zam was more than impressed to find this skull sculpture on the side of the wall that is featured (or copied) in the Indiana Jones series.
Palenque is also situated in an amazing tropical rain forest which we had fun exploring. See the collage below for more Palenque pictures. And sorry for the lack of facts and history on Palenque. Please google it if you care to learn more.