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

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

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

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

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

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

A Hungarian pharmacy museum with a box full of mummy powder.

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

A museum in the childhood house of a medical pioneer.

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

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Museum dedicated to the terror regimes of Hungary.

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

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

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

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

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

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

Featuring Zürich's only authentic 14th-century plague doctor's uniform!

Though it may look like a businessman's lost luggage, this case suspended under a highway bridge is actually a contemporary art installation.