Eat the ultimate iteration of Portugal's most beloved pastry.

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.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

Europe’s oldest natural human mummy.

The first passenger cable car in the world.

Budapest's Communist-era statues, banished to the suburbs.

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

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

A relic of World War I that now exist as a piece of public art.

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.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

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

Museum dedicated to the terror regimes of Hungary.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Krakow's own version of the Hollywood Walk of Fame.

A collection of modern and vintage pinball machines housed in the cellar of a 15th-century building.