Boulder, CO

Mesa Arch, Canyonlands National Park - Moab Utah

Son Doong Cave, Vietnam. The largest cave in the world.

Inishmore, Ireland

Ruins of Whitby Abbey Monastery. North Yorkshire, England

Tahiti, French Polynesia

Soča River, Slovenia

Luoping, Yunnan Province, China

Iceland

Cave pool, Santorini, Greece

High Falls at Tettegouche State Park

St. Maarten, French West Indies

Denali National Park, Alaska