This giant boulder is pinched over a 1000-meter abyss by two mountains.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A small but immensely extravagant palace built by the "Night King."

The most powerful waterfall in all of Europe.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Eighty million natural history specimens call this gargantuan museum home.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Catacombs turned marketplace.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This cemetery features modernist statues as strange as its name.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

This elegant arc of a waterfall marks a religious turning point.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

The hallucinogenic center of the ancient world.

Hear the quietest sound from across the dome.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Quite simply the largest tree in the world (by volume).