This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This house's itty bitty size means no humans allowed.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

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

Gargoyle head that brings good luck.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

An ode to the classic piece of British street furniture.

A Hungarian pharmacy museum with a box full of mummy powder.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Museum dedicated to the terror regimes of Hungary.

Once the home of a hermetic monk, this cave now houses a small church.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The location of the world's first telescope demonstration.

A little sculpture with a large wardrobe.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

The modern birthplace of Irish freedom.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The oldest public library in Ireland.