Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

This everlasting lightning storm may be the world's largest generator of ozone.

This fortress sits atop a centuries-old well system.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

This giant volcanic crater holds its very own field of salt.

An archaeological site believed to be the burial place of the "mother of us all."

Village of slate houses, built on a white marble outcrop.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Moss and stone turn this waterfall into an otherworldly liquid veil.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Someone left a Boeing 737 in a field in southern Bali.

The wing of this deserted Boeing 737 almost touches the Dunkin' Donuts next door.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

Peek through a transparent pyramid and drink in the mountain made of books.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

This is what trains will look like after the zombie apocalypse.