The natural arches of France
Grands Causses Regional Park (France)
Ponta da Piedade (Algarve-Portugal)
Los Bufones Area (Asturias-Spain)
Serrania de Cuenca (La Mancha-Spain)
Sierra and Canyons de Guara Natural Park (Aragon-Spain)
Tassili National Park (Sahara-Algeria)
Tassili-n-Ahaggar (Sahara-Algeria)
Tadrart Region (Sahara-Algeria)
Ahaggar National Park (Sahara-Algeria)
Wadi Rum Reserve (Jordan)
Moab Area (Utah-USA)
Arches National Park (Utah-USA)
Canyonlands National Park (Utah-USA)
Capitol Reef National Park (Utah-USA)
San Rafael Desert (Utah-USA)
Bryce Canyon National Park (Utah-USA)
Escalante Grand Staircase National Monument (Utah-USA)
Natural Bridges National Monument (Utah-USA)
Lake Powell / Glen Canyon National Recreation Area (Utah-USA)
Navajo Nation (Arizona-USA)
Sedona Area (Arizona-USA)
RattleSnake Canyon and Vicinity (Colorado-USA)
The Natural Arches of Colorado Plateau (USA)
Valley of Fire State Park (Nevada-USA)