This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The statue of a cursed knight is said to come to life every 100 years.

Walk through Czech history in Prague's largest graveyard.

The ruins of a medieval bridge are visible inside a Prague Metro station.

A mocking tribute to the past and modern leadership of Prague.

Monument to a suicide protesting the Soviet invasion.

Discover the taste of mold.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The original shop where the iconic Belgian praline was invented.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

This cannonball has been lodged in the church wall since a 1695 bombardment destroyed the city center.

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

Known as "The Spewer," this bizarre fountain has an even stranger urban legend behind it.

Brussels' favorite peeing boy has a sister.

This non-profit theatre in the heart of Brussels is dedicated to hosting independent films.

A largely overlooked statue that may commemorate the first publication of 'Don Quixote' outside of Spain.

The world's oldest bookshop still in operation.

The devil-defying mark left by a saint as a boy is visible inside Lisbon's cathedral.

The best place in the world to buy tinned fish.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

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

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.