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

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This little museum has an exhibit devoted to the elusive forest denizens.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

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

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

An extensive collection of ancient Egyptian artifacts and mummies.

These two K-9 memorials commemorate the sister cities of Edinburgh and San Diego.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

San Diego's most historic and haunted home.

Furniture tries to escape an abandoned building in San Francisco.

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

For nearly 50 years, this San Francisco nonprofit has been serving as a mix of recycling center and art school.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

A quiet nook at the top of a little-known hilltop park named after California's first poet laureate.

The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

Faceless white figures loom over the city from the rooftop.

A man-made island in scenic San Francisco Bay.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Legendary frontman of the Doors looms in this giant mural by famed Venice muralist, Rip Cronk.

A tribute shrine where the Space Invasion street art movement started.

The video game-themed street art first popped up in the French city.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.