Saar river, Western Germany.

Similan Islands of Thailand

Bow Lake, Icefields Parkway, Canada

Reed Flute Cave

County Fermanagh, Northern Ireland

Lençóis Maranhenses

Wineglass Bay - Freycinet National Park, Tasmania, Australia

Bowling Rocks Preserves, Jupiter, Florida

Qilian County, China

Wizard Island at Crater Lake, Oregon

Infinite Cave, Vietnam

Old Man's Cave - Hocking Hills, Ohio

Appalachian Trail, Smoky Mountains, Tennessee