3. Copper Canyon
Copper Canyon is a sequence of canyons in the Sierra Madre Occidental mountains. They are located in the North-Western state of Chihuahua. This series of canyons are longer and deeper than the Grand Canyon! It is popular with hikers due to the stunning views that the reddish canyons create. Also, a train line, called El Chepe runs throughout the whole canyon, making it a great method to see them in all their glory.
