The silly symbol for an underground protest group is now scattered around the city.

A striking public sculpture representing the period of martial law in Communist Poland.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

This derelict superstructure was a very important warning system for the Soviet military.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

The dining hall that nourishes workers in Chernobyl's Exclusion Zone is also open to visitors.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A collection of old neon signs from all over Poland line a secluded courtyard.

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

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

Baroque celebration of the end of the Great Plague of Vienna.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

An undulating wicker beast looms peacefully atop a sand dune in Belgium.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

Metro station with a claim to rock n' roll fame.

The last bastion of Roman presence north of the Alps looms over a German town.

The prototype for all Nazi concentration camps.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

Said to be the only museum in the world dedicated to the most classic of all blooms, the rose.

"Holy Wisdom" overlooks the city that became its namesake.

Rock carving created 1,300 years ago 75 feet off the ground.