These laid-back Mexican villages are the taco the town

From smog-choked Mexico City to the cartel-infested jungles of Tulum, Mexico can be a lot. But tucked away from the tourist traps, from Baja to the Yucatán, are a rich collection of cultural gems. In these pint-sized places, where the car horns and screeching camote sellers disappear into a concert of mariachi music and the...