Europe's largest natural bridge has a 19th century royal chateau built into its side.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Towering sandstone rock formations where 'The Chronicles of Narnia' was filmed.

A subtle memorial marks where a human chain protested Soviet control in 1989.

The European Union’s tallest freestanding structure provides radio and television broadcasting to half of Latvia.

A former graveyard for Riga’s elite is now a large park with elegant monuments.

A mammoth WWII anti-air defense tower has been repurposed as a hotel with a rooftop garden.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

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

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Looming communist pillar with a Czech twist.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This artificial cave looks like something out of a fairytale.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

A subterranean house of worship carved right out of the bedrock.

There's something in the air as history repeats itself at this museum dedicated to the Swedish pop band.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

A Latvian rescuer who saved countless lives during World War II.

Over time, this castle grew to encompass the entire island.