This one has sailed five times as far as Sir Francis Drake's famous ship.

Murals of the wild parties once held on the frozen River Thames.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Tucked away in a London Tube station, this 1920s linear clock shows the time across the world all at once.

One part local history, 99 parts gruesome haunted house.

Repository for more than 22 million pickled specimens.

Eighty million natural history specimens call this gargantuan museum home.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

Remarkably preserved body discovered in a peat bog.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

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

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Along the pavement of this neighborhood in Madrid are quotes from famous authors.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

An old, deep well, connected with a miraculous, divine rescue and the patron saint of Madrid.

Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.