San Diego's most historic and haunted home.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The final resting place of a space program monolith.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

This grand mansion has starred in everything from Bones to Buffy.

This glamorous old building is said to have inspired the Tower of Terror.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

New Orleans' famous cemetery, located on the site of a former race track.

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

A very classy 1920s-era bar right in Grand Central Station.

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.

Tubing through a cave lit with glowworms is a magical underground experience.

Catacombs turned marketplace.

The trials and tribulations of marking Poe's grave.

Quite simply the largest tree in the world (by volume).

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

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

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Odd outsider art installations surround a Gold Rush-era ghost town.