A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The hallucinogenic center of the ancient world.

Pompeii's less famous neighbor is still revealing her secrets.

Magical-looking cottages that inspired one of the most famous animated films ever.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

A 300-ship graveyard, with a few still visible at low tide.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A stealthy Apache hideaway that became the haunting site of a mass grave.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Stay in a room with a view... of the bottom of the ocean.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The longest living non-clonal organisms on Earth.

An homage to everyone's favorite prehistoric cartoon family.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

An eccentric inventor's castle home with its own indoor weather system.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

The only diamond mine in the world where you can keep what you find.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

Iceland's largest lagoon is home to stunning multi-colored icebergs.