The stunning interior of this Gothic church is covered in ornate gold details.

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Ancient human, animal, and geometric figures drawn in the earth.

One of the world's longest murals depicts the history of diversity in Los Angeles.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

A pub that is literally in the middle of nowhere, but continues to do business.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

It specializes in outsider art and artifacts of secret societies.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

An abandoned asylum incorporated into a college campus.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

The steepest classic funicular in the world glides along a dizzying incline.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

An eerie, decaying ghost town destined to fade into the forest.

An architect's childhood fantasy treehouse made real.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

Narrowest house in Boston.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.