Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

A small, but award-winning beach known for its literally spotless reputation.

Northern Ireland's Brobdingnagian stepping stones.

270 million year-old forest of stone.

These layered sandstone mountains in China look like they are made of pressed crayons.

The hottest place on the planet.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Roman ruins top white travertine terraces formed by ancient hot springs.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

"Alleys of Stone" form natural mazes in Spanish natural park.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Giant granite sculptures representing family on the northern coast of Spain.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

Founded as a refugee camp, now a popular tourist spot.

This small commune with an even smaller name appears to have an unlikely amount of dead ancestors.

This ancient theater was once the home of fierce gladiatorial battles.

Thousands of flamingos and other bird species flourish in these Camargue wetlands.

This historic stone gate tower is now just a lonely relic in the middle of a swamp.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.