Europe's official "zero-level," the equator of elevation.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The attic of a four-century-old canal house hides a clandestine church.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Experience what life was like in Ireland during the Viking and medieval ages.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A beer pipeline runs beneath Bruges.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.