This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

One of the most iconic neon ads of former East Germany.

A carved grave marker from the 2nd century is mounted in the alcove wall of this Bavarian church.

Albert Einstein's head sticks out of a snail shell stacked on a rocket in this truly bizarre monument to the scientist.

Twisted buildings adorn the banks of the Rhine river.

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

A 12th-century fortress containing some of Berlin's oldest buildings.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

A fearsome dragon clings to a corner of Munich's city hall.

A statue beloved by—and named by—the local townsfolk it represents.

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

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

A monument to the "father of modern warfare" Gustav II Adolf.

Bring out your dead (saints that have been festooned and bejeweled, so that we can parade them around the town)!

The remains of three Luftwaffe launch pads designed for manned anti-aircraft missiles.

A remarkable two-country morph, this town is part of Germany legally but is by all other measures Swiss.

Held in an old church, this clockwork museum maintains a special focus on titanic tower timepieces.

Germany has its very own Centralia, whose spark remains attributed to "spontaneous combustion."

A city's controversial tribute to its founder depicts townspeople flashing their bare behinds.

The oldest trees in Northern Germany.

Medieval ruins on a tiny island amid a flooded lake offer romantic respite to lovers seeking privacy.

A Neolithic burial site erected around 3000 BC.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.