The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

A market built atop boats is one of the few floating holiday markets in Europe.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

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

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

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

Olfactory delights in San Francisco's Botanical Gardens.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

A whimsical antique shop with a strong air of mystery, filled with items from ages, and what feels like worlds, past.

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

Where the rich wintered in Pasadena.

Pasadena glamour turned government issue.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Two men, two visionaries of Venice Beach, one little hotel that smells like cookies.

The World Wide Web was created in this nondescript corridor at CERN.

This print shop boasts one of the largest pinball arcades in San Francisco.

A 140-year-old castle with underground caves hidden in San Francisco.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.