Tufas at Lake Mono, California

Sunrise over the Superstition Mountains in Arizona

Popeye Village, Malta

Alberobello, Italy

Grand Teton National Park, Wyoming

Beautiful beach in the Seychelle Islands

Half Dome, Yosemite

Natural limestone structures at Nambung National Park, Western Australia

Sunrise over Pisgah National Forest in North Carolina

Venice Falls in Maui Island, Hawaii

Lake Minnewanka near Banff AB, Canada

Lake Bled, Slovenia

(OC) The Mojave Desert wilderness in Joshua Tree National Park.