This spooky statue sits outside a famous Prague theater.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

This museum houses and extensive collection of technology contributed by the Polish people.

This 13th century Gothic brick castle is the largest in the world by surface area.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Dine on Hungarian-Jewish dishes at this multigenerational, family-run institution.

The remains of an entire Roman city can be explored in this interactive museum.

The abandoned military base looks like a post-apocalyptic wasteland.

One of the largest barracks of the Austro-Hungarian monarchy's military is now an abandoned ruin.

The oldest private art gallery in all of Hungary.

Electrical curiosity museum housed in an old transformer station.

This hidden art nouveau gem was designed by an architect in search of a national style.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

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

A two-way chairlift system between Zugliget and the highest point in the city.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

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

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

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

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Museum dedicated to the terror regimes of Hungary.

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

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

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