The final resting place for the remains of 143 Habsburg royalty.

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

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

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

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

This former insane asylum now holds a pathological anatomy museum.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Macabre museum devoted to historical Viennese murders.

Op-art architecture designed for happiness.

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

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

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

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

Museum dedicated to the terror regimes of Hungary.

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.

Home to three historic ships from the age of Vikings.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.