Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

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.

Historic funicular railway, believed to be the shortest railroad in the world.

The private clubhouse for the members of the Academy of Magical Arts.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

America's most famous piece of self-built architecture.

The legendary building that needed ghostly approval before being built.

A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

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 only castle in North America to ever house European sovereigns.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

Frida Kahlo's childhood home, now a museum of her life and works.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Pivotal home of Nobel Prize winner Pablo Neruda.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.