The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

This infamous prison has a store where you can buy goods crafted by incarcerated people.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

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.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

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

An underground city of salt.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

The remains of a ruined mansion memorialize the 1906 earthquake.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A 300-ship graveyard, with a few still visible at low tide.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

The largest permanent Monopoly board makes one of the longest games even bigger.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The final resting place of a space program monolith.