The largest catacomb system in the world.

The largest fountain in Bratislava.

Giant topiary dog once played a role in a terrorist bomb plot.

This 19th-century fountain's namesake animal isn't what you think it is.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

This unique Lady Liberty is one of the only examples of the figure sitting down.

This Ukraine alleyway has become its own little island of forgotten things.

A peculiarly shaped brass sculpture hidden in a courtyard in central Lviv

Notorious artist squat renovated into legal studios.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

This attraction was abandoned after the Chornobyl disaster.

Marvel at the excessive luxury of the ousted Ukrainian president's former estate.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

A futuristic, brutalist masterpiece that is also strangely prison-like.

A 11-foot former president stands on a Kosovo street that also bears his name.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

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

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

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."