"Ride the last great passenger train in Mexico through one of the deepest and most ecologically diverse canyons in the world. Take the Ferrocarril Chihuahua-Pacifico from Los Mochis to Creel, explore the canyon a bit, then hop back on the train and ride to Chihuahua, a stately northern colonial city. Go in Spring or Autumn when it's not too hot or too cold!"