A striking 12th-century-style castle built on the edge of a cliff.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

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

A fantastic castle rumored to be the birthplace of King Arthur.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

The fairy tale castle of the "fairy-tale king."

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

The oldest house in Lindsborg, Kansas, includes some fascinating inscriptions.

This historic early-20th-century building still boasts some of its original features.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

Home to Hollywood history and a very special salt crystal.

Created by Catalan artist Joan Miró in 1978 and made up of 350,000 tiles, this mural is the only large-scale glass mosaic the artist ever created.

An abandoned castle owned and ignored by Masons carries a cursed history.

England's largest white horse isn't even white.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

One English town's celebratory landmark spurred more trouble than anticipated.

The country home of world-famous designer, writer, and artist extraordinaire, William Morris.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

Enormous, fluffy dogs frolic around this museum dedicated to a legendary Saint Bernard.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

This oak sculpture at the edge of a small woodland is nine feet tall and shrouded in mystery.

Children's literature inside, forest all around.