A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Where once there was a train station bathroom, there is now this German burger joint.

Ruins of a German Castle on top of a towering stone pillar.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

A slice of central Asia in the middle of Berlin.

This 11th-century structure is one of the oldest churches in Romania.

A scene from one of Hungary's most famous novels.

A diminutive statue that was inspired by the sculptor's own daughter.

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

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

Hungarian mummies in beautiful painted coffins.

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

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

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

Museum dedicated to the terror regimes of Hungary.

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

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

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.