Playa del carmen soon?

Cozumel has a few small sites of Mayan ruins. It also offers lots of activities like scuba diving, snorkeling, parasailing, etc. I can tell you from experience that the diving is excellent. The parasailing was fun too. If you want to see some really impressive Mayan ruins, you might want to consider a tour of Tulum, about 30 to 40 miles south of Playa del Carmen.