La Gruta
Easily the most famous---though also touristy---dining option in the area, this hulking restaurant dates to 1906 and is set within an immense cave with dramatic rock ceilings. The traditional Mexican fare served here is consistently good, including hand-made corn quesadillas filled with seasonal ingredients, tortilla soup, albóndigas (meatballs) in a tomato-chipotle stew, and traditional barbecue. There's a pretty good kids' menu, too. Reservations aren't required, but they're a good idea on weekends and holidays. Although open every day of the year, La Gruta closes at 7 nightly.