This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

Australian Lake set aglow by Noctiluca Scintillans.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

The underground sanctuary of a mysterious ancient cult.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

Hundreds of trees made from glass bottles make up this forest on Route 66.

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

The 953 windows undoubtedly make this the world's most beautiful screened porch.

A beautiful 62-acre Catholic shrine and botanical garden.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A Boeing mechanic and his wife leave a whimsical, stone sculptured garden as their legacy.

Extraordinary sculpture garden created by an eccentric English poet.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A legendary speakeasy bookstore returns from the brink.

A collection of abandoned typographic signs from Berlin and beyond.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

The glowing blue Nymphaeum of Emperor Tiberius.

Countless stories attempt to explain Poland's mysterious J-shaped trees.