A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

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.

Museum dedicated to the terror regimes of Hungary.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The sign announces the Scottish village's cosmic connections, as it's twinned with Glenelg, Mars.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

From here, the loch appears to take the shape of mainland Scotland.

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

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A baffling beast so absurd a town councilman called it "intellectual vomit in technicolor."

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Northern Ireland's Brobdingnagian stepping stones.

A beautifully eclectic mix of architectural styles.

The world's only museum devoted to the wonders of fluorescence.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

A floating cat sanctuary on an Amsterdam canal.

The history and future of cannabis.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

Cat art as far as the eye can see.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

This unusual elevator doesn’t stop or slow down.