You might be surprised to learn that the origin of chewing gum can be traced to Mayan culture and, specifically, to Mexico’s Riviera Maya. The Chico Zapote tree yields the raw material that’s turned into gum, a process that began in the fourth century. The tradition continues today, and visitors can take a guided tour with a chiclero, the person who extracts the sap from the tree, to learn how gum is made. Of course, if you want to buy some gum as a souvenir, you can. The organic-certified Chicza brand comes in a variety of flavors and is sold at stores around Riviera Maya.