There are two dozen tanks just sitting in an open field in Lower Saxony.

The narrowest street in the world is in danger of closing up entirely.

A small square plaque marks a failed assassination attempt that could have changed history.

The world's biggest pet store.

At this unusual park, domes, ladders, chairs, and more are made from trees.

A kindergarten shaped like a cat with a tail that's a slide.

This East German military command bunker was ready for World War III.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

This extremely narrow tenement boasts a maximum occupancy of just two.

A Nazi concentration camp and Anne Frank's place of death.

Go surfing on this urban wave, "hacked" by local surfers.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

Constantly maintained, this organ is playing a six-century long composition by John Cage.

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

Remnants of an exploded schooner and wrecked submarines form a breakwater.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

This 600-year-old home seems to defy physics.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

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

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

Enter the cabin of a life-sized Hindenburg replica.