Lightning flashes around the ash plume of the Puyehue-Cordon Caulle volcano chain near Entrelagos, Chile.

Sandstone pillars, Meteora, Greece

Yellowstone Canyon, WY

A view from Cathedral Rock, Sedona, Arizona

Richardson's Grove State Park, California

Bristle Cone Pine Forest, White Mountains, California

Painted Desert, John Day Fossil Beds National Monument

Sunshine Meadows, Canada

Routeburn Track, New Zealand

Hoi An, Vietnam

Canyon Lake, Arizona

West Glacier National Park, Montana

Lake Geneva