Where commuters walk through remnants of an ancient Greek necropolis.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

An ancient octagonal weather station named for the eight Greek gods of wind.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

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

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

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.

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

The most loyal of little dogs, or a Victorian era publicity stunt?

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

A monument to one of the most famous modernist Chinese poems and its poet.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.