Yosemite, California 2012

Dean's Blue Hole, Long Island, Bahamas.

Birch forest, Altai Mountains, Kazakhstan

Fjallabak, Iceland

Great Falls, Virginia

The Sphinx Observatory at Jungfraujoch, Switzerland provides stunning views of both the heavens and the earth.

Honokohau Falls, Maui, Hawaii

Natural limestone structures at Nambung National Park, Western Australia

The Bungle Bungles in Purnululu National Park, Australia

Denali National Park, Alaska

Madeira Island, Portugal

Ironton, Colorado

Matterhorn at night - open sky and twinkling stars