One of the Seven Wonders of The World is just 2.5 hours from the resort. Chichén Itzá is an ancient Mayan city that is worth to see. This masterpiece is about 1500 years old and housed ceremonies for the Mayan civilization.
Xenotes tour is also a great option! These "sinkholes" are extremely Interesting and fun to visit. You can kayak or canoe in them.
Tulum is another great destination, there are tours available to visit the Mayan ruins and learn more about their history.