Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

The prototype for all Nazi concentration camps.

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

No need to strap in for a "ride" on this walkable roller coaster.

Terrifying derelict military hospital once housed a recuperating Hitler.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

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

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

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

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

"The most colorful grottoes of the world.

When the rain falls, this drain system turns into a musical instrument.

A wunderkammer of mysterious objects and stories.

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

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

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The fairy tale castle of the "fairy-tale king."

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

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

A collection of noses tucked inside an art museum reveals how times have changed.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.