This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A man-made island in scenic San Francisco Bay.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Furniture tries to escape an abandoned building in San Francisco.

The magic's in the hole!

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A comprehensive collection of Pez dispensers.

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

A giant chess set, minus the psychedelic drug trip.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

The most famous location in China was home to whole dynasties worth of imperial rulers.

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

What can compare to the comforting sound of 10,000 toilets running?

A giant Troll lurks under one of Seattle's oldest bridges.

A wall of chewing gum moonlights as collective art.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

This private residence was the template for one of the most beloved television homes of all time.