Every year, millions of tourists visit Grand Canyon National Park in Arizona, the and one of America's most spectacular natural wonders. In fact, 4.7 million people visited the park in 2014, according to the National Park Service. But while the majestic Grand Canyon is the most famous canyon on earth, there are other canyons and gorges—which are formed by the movement of rivers, the processes of weathering and erosion, and tectonic activity—worth visiting.

The in southeastern France, for example, is considered to be one of Europe's most stunning wonders. Called "The Grand Canyon of Europe," the immense canyon slices 15 milesthrough Haute-Provence’s limestone plateau, in the foothills of the Alps. The canyonplunges 1,000ft to the emerald-green river below, a river known for its striking turquoise color, associated with glacial sources and the minerals of rock flour suspended in the water.

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Another canyon known for its breathtaking beauty is the Fjaðrárgljúfur Canyon in south Iceland. About 328ft deept and a little more than a mile long, with the Fjaðrá river flowing through it,Fjaðrárgljúfurwas created by progressive erosion by flowing water from glaciers through the rocks and palagonite over millennia.There is a , and it is possible to walk up through the canyon, though visitors must wade across the river, according to EnjoyIceland.

One of Peru's most visited attractions, Colca Canyon measures more than 13,600 feet in depth—more than twice the depth of the Grand Canyon.In places, the canyon's sides are so steep that it is , according to Rough Guides. The higher edges of the valley are covered with pre-Incan, terraced fields. The area is also home to soaring condors and spectacular trekking routes.

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