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

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

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

The monumental home of Prussia’s eccentric "Cannon King."

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

Take a walk in a recreation of ancient Rome.

Giant wind turbine with observation deck at the very top.

Remnants of a cone-shaped Nazi bomb shelter.

Be it nature, art, or abandoned military architecture this eclectic German "museum" has you covered.

Constructed by forced laborers, this submarine pen is now a museum and war memorial.

One of the largest legal spray spots in Hamburg.

This outdoor library provides around-the-clock access to around 7,000 books.

Tiny castle in the middle of the Rhine made you pay to pass.

This 18th-century folly is one of Europe's rare "garden mosques."

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

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

Art installations, derelict railcars, and endangered grasshoppers all call this south Berlin park home.

This watchtower once presided over the Berlin Wall.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.

Now overgrown, these anti-tank barriers from World War II are sometimes called "dragon's teeth."