Right across from Tequila's main plaza, Mundo Cuervo, which is owned by the José Cuervo distillery, the world's oldest distillery, is a veritable tequila theme park and the biggest game in town. Hourly tours include tastings and a free margarita in a plastic cup. The hour-long tour is a bit rushed so it's worth spending a little more on one of the longer and more comprehensive tours.