This narrow Ghent alleyway is an officially sanctioned street art tunnel.

A moving memorial to the fallen and missing from WWI trenches.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Brussels' favorite peeing boy has a sister.

A Museum of Psychiatry in a still-operating mental institution.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

Meet the bronze beloved pet to a family of famous peeing statues.

A little sculpture with a large wardrobe.

Theme park featuring miniature replicas of European monuments.

This abandoned Belgian fortress is purposefully being left to nature.

Cozy basement bar sports an inventory of over 2,000 beers.

Climb inside an iron crystal magnified 165 billion times its normal size.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This ghost town in Belgium will lose its street art when it ceases to exist.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

A concrete plant shaped like four giant soldiers commemorates one of the most decisive battles of the Napoleonic Wars.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

An unusual bronze bus shelter is actually an art installation commenting on the city's history with the Nazi party.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A surreal statue honoring Prague's favorite literary son.

A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

Tiny communists hammer away on the Olomouc Astronomical Clock.