An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A futuristic, brutalist masterpiece that is also strangely prison-like.

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

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

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

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

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

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

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

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

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

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

An ancient necropolis of magnificent tombs.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

Inside this small chapel tucked away in the forest is one of the most well-preserved Danse Macabre frescos.

Island wonderland for communist autocrats.