The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Amsterdam's former hotspot for public executions and dissections.

One of Amsterdam’s most popular cultural and recreational complexes is on the site of a former gas works.

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

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

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

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

Christ's blood allegedly preserved in a Belgian town.

Drink among marionettes at this pub inside a historic puppet theater.

Brussels' favorite peeing boy has a sister.

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

This huge limestone slab is considered the largest paving stone in Belgium and a relic of the earliest modern paving in Brussels.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

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

Belgium's national heroine turned spy sacrificed her life to combat German occupation.

This historic Art Nouveau townhouse was the former home of the son of a famous chemical inventor and industrialist.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

A tongue-in-cheek marker at the place where Robert Barr supposedly created Scotland’s favorite soft drink.

Across Valencia lie the remains of three ancient fortifications built centuries apart: a Roman enclosure, an Islamic expansion, and a medieval Christian wall.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

One of the most colorful free outdoor attractions in San Diego, this park is filled with murals and ties to history.