This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

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.

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

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

A museum in the childhood house of a medical pioneer.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

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

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This Transylvanian church has changed its denomination four times.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Something's watching you.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

A small town Romanian cemetery filled with darkly humorous gravestones.

This snug medieval lane is one of the narrowest streets in the world.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

The Natural History Museum that time forgot.

A limestone wonderland of water and subterranean secrets.