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

A beautiful maze marks where three countries meet.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

This natural "sea of stones" was once used by the Romans as a quarry.

Hidden in the forest are the crumbling, graffiti-covered remains of the factory where most of Germany's explosives were produced during World War II.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

Take a walk in a recreation of ancient Rome.

Retirement home for giant obsolete machines.

An industrial relic is now one of Europe's most staggering art spaces.

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

These 18th century gardens tell a rocky story of the son of Odysseus.

Living trees form the structure of an open-air palace.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

"The most colorful grottoes of the world.

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

A ruined castle stands atop a hill surrounded by dragon lore.