A submerged village appears when dam levels drop.

An enormous, inside-out glass globe built in 1935.

Rising from the sea like a stone monster.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created with the discharge from a geothermal energy plant.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

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

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Largest private bird collection in Iceland, formed from a tragic accident.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A typical crusty old museum this isn't.

It's not your typical library, memorial, or book store.

Rippling sand dunes frozen in the Arizona rock.

Most-visited and most-photographed slot canyon in the American Southwest.

Northern Ireland's Brobdingnagian stepping stones.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

A trash dump made beautiful by nature's power.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

A tunnel of hardened lava along Maui’s famous Road to Hana.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

A Hawaiian stairway to heaven—that you can't climb.