These massive moving sand dunes have swallowed an entire village and are still on the run.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

This former quarry is now a picturesque gorge that hides a sunken lake.

The 14th-century ruins are said to contain healing powers.

A spiral staircase twists to the top of this unusual Czech lookout tower.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

These 18th century gardens tell a rocky story of the son of Odysseus.

This historic stone bridge has an entire neighborhood clinging to its sides.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

Living trees form the structure of an open-air palace.

This cubist Vienna church building looks like some sort of alien stonehenge.

American soldiers discovered Europe's best one-liner at the end of World War II.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

An ornate century-old elevator still connects the two halves of Bad Schandau.

Ruins of a German Castle on top of a towering stone pillar.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This modern labyrinth lies in the shadow of a ruined medieval castle.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The first recognized Neanderthal remains were found in this now-lost cave in 1856.