This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

The abandoned fishing village was swept right into the sea.

A unique waterfall that some believe attracts the fairfolk.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

This remote castle was built to be a wealthy businessman's palace of vice but is now simply a historic vacation cottage.

This ruined 15th-century hermitage is steeped in myth and mystery.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

These picturesque ruins crumble beautifully into the ocean.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.

A once grand hotel is being retaken by the wilderness it once capitalized on.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

These mysterious 1,000-year-old walls have revealed little about their past.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

An abandoned 17th-century baroque hunting lodge with a wonderfully strange architectural plan.

Renaissance villa and gardens complete with a tormented colossus.

An abandoned settlement originally established by British colonialists in the Andaman archipelago.

These medieval monastery ruins are surprisingly overlooked by most tourists.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

What was once England's second-richest abbey is now a haunting ruin.