A bit of Maya history

While in Mexico, I'm hoping to do some traveling around to various historic sites. The Yucatan peninsula is filled with ruins and temples of the Maya civilization. When I lived near Mexico City I visited some Aztec/Toltec/Olmec ruins, but I've never been to this area of Mexico before, so I'm looking foward to it. The Wikipedia link above has a ton of information about the Maya, including this section about their Pyramids and temples. Between visiting such sites, some colonial cities, hanging on the beach, and sleeping, it should be a pretty busy visit.