A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

Where the lovelorn find a home for their sentimental keepsakes.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

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

A two-way chairlift system between Zugliget and the highest point in the city.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

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

A fake Transylvanian castle houses a cathedral of antlers.

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

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

The true meaning behind this sculpture remains unknown.

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

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

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

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

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

The metal leaves on this tree are engraved with the names of Holocaust victims.

This sculpture honors the man who was known as the "Righteous Among the Nations."

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

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.