Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Roman ruins top white travertine terraces formed by ancient hot springs.

Copenhagen's celebrated theme park and gardens.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

This historic observatory contains the world's oldest refracting lens telescope.

These phallic stone spires once served as Tolkien's Paths of the Dead.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

This aluminum “stairway to heaven” has impaled at least a couple of birds.

You may recognize this beautiful grove within Kaitoke Regional Park as location of the house of Elrond.

A public urinal so pretty, it was declared a national monument.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Cold war icon and onetime "hole" in the iron curtain.

A restaurant and observation deck built in a unique broadcasting antenna.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

The most visited, and possibly most controversial, museum in Germany.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.