Tahquamenon Falls, MI

Letchworth State Park; Castile, NY, USA

Switzerland, near the French border

Königssee, Berchtesgaden National Park, Germany

Abby Aldrich Rockefeller Garden, Maine

Sunrise over thermal pools in Yellowstone.

Socotra Dragon Trees, Socotra archipelago

Sidi Bou Said, Tunisia

Sunset in Romsdalen, Norway

The Reed Flute Cave in China

Cala Dogana, Levanzo, Italy

Lac d'Allos in France's Mercantour National Park -

Key West Sunset...