This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Longest fortress system anywhere in Europe.

This huge metal monument is slowly being stripped to its concrete skeleton.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

Where the lovelorn find a home for their sentimental keepsakes.

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

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

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

An increasingly eccentric apartment building, topped with winged beasties.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Resting place of Hollywood's immortals is also site of summer film screenings.

One man's homage to the sun continues to grow like a glass fractal.

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

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

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

A downtown park built on top of unclaimed graves.