Barrancas del Cobre
Our Grand Canyon is, in fact, pretty grand. But what if we told you that there's an even GRANDER canyon just on the other side of the Rio Grande? In Mexico's northern state of Chihuahua (the place, not the mascot for Taco Bell, which, also, is not super Mexican) is Barrancas del Cobre, or Copper Canyon. This natural phenomenon spans more than 25,000 square miles and is made up of six canyons in the Sierra Madre Occidental mountains. It's a prime spot for adventure travel, from hiking and biking to driving and horseback riding, and the most popular way to cruise the canyon is by train, aboard the Chihuahua al Pacifico, or "El Chepe."