An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

These floating gardens show what Mexico City used to look during the Aztec Empire.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

The largest stretch of the Berlin Wall is right on top of the former SS headquarters

A unique bridge with an equally unique view.

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

The prototype for all Nazi concentration camps.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

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

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The world's largest flat-topped mountain.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

San Francisco's newly reopened hands-on science museum.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

This giant shopping mall still holds signs of its automotive past.

The headquarters of a secretive order is also a beautifully-designed park.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An extensive collection of ancient Egyptian artifacts and mummies.

The headquarters of the semiconductor giant has a 10,000-square-foot museum.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.