445 N Clark St
Chicago, IL 60654
Frontera Grill is Rick Bayless' first-established restaurant, and it serves up high-end casual Mexican fare inspired by Rick's years of delicious anthropological research South of the border. The margaritas are delectable, and there's even one you can order (the splurge margarita) that will probably leave your pockets empty but your stomach full. The authentic Mexican flavors are best enjoyed on the sidewalk patio where you can people watch.