Peyto Lake, Banff National Park

Antelope Canyon, Monument Valley

Volcanic Iceland

A hanging valley in Rocky Mountain National Park, Estes Park, CO

Hardangerfjord, Hordaland, Norway.

Seljalandsfoss, Iceland

Slave's Edge near Leitisvatn in the Faroe Islands

Great pic of Niagara Falls.

Reed Flute Cave, Guilin, China

Ptarmigan Lake, Glacier National Park. Via The Real Good Times blog

Arches National Park, Utah

The sky in the ground. Yellowstone National Park

The Fairy Pools, Isle of Skye, Scotland