This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

Venice's island of the dead.

Go inside to really appreciate this 500-year-old technological masterpiece.

Pilgrimage site for star-crossed lovers.

Old Danish castle immortalized in Shakespeare's Hamlet.

An ancient knight and a symbol of the city's freedom.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The beautiful baroque library of the Hapsburg empire.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

A 168-foot tower, part of the abandoned Chester Leadworks facility.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Decrepit Victorian public lift is a white-knuckle ride.

Regency-era excess on the English Coast.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

2300-year-old Roman road connecting the empire.

A former suicide bridge is now accumulating symbols of love instead of a body count.

Early habitat dioramas and home of the elusive gaff, the skvader.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.