More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Tubing through a cave lit with glowworms is a magical underground experience.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

This hotel is located on the edge of the world's largest salt flat and is made out of the only material around.

A desert that evokes the surreal.

Bolivia's needle-like rock formations.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

Astronomical observatory above Lake Titicaca.

This red lake 4,000 meters above sea level is home to rare flamingos.

A valley of unique erosion patterns lends to a view like nothing on Earth.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

A seemingly endless landscape of pure salt stretches far across Bolivia.

This striking, two-toned confluence of rivers is visible from space.

Unusual rock formations eroded into a landscape of stone beasts.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

The largest stone moai on Rapa Nui.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

An explosion of natural color known as "the river that ran away from paradise."

A dangling church built over a Colombian gorge.

Massive volcano in the Andes is the farthest point from earth's center.