One man's personal kunstkammer, museum and shop.

One of the most easily accessible examples of the rare 1960s UFO houses.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

A stairway to heaven, or to nowhere at all.

This abandoned airplane hanger is said to have once been a top secret launch facility.

This unique museum focuses on the Siege of Sarajevo through children's eyes.

This feat of Brutalist architecture is also known as the Three Sisters.

This statue of a goat in boots is meant to represent the European Union.

On a remote footpath and surrounded by beautiful Sussex countryside sits Sussex’s smallest cemetery.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

This unusual hostel provides a glimpse of life in a city under siege.

These stairs feature the names of Zemun's most famous faces.

Tucked in an urban forest, this restaurant specializes in homemade, healing rakijas.

One of Belgrade's most beloved animals.

This statue of the famed author, actor, and journalist is made entirely of screw-nuts.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

A giant portrait of an ancient king looms over the river.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

One of Hungary's most influential places of learning is also home to one of the world's most beautiful libraries.

The ruins of an early 1900s neo-Baroque mansion sit nestled in a local park in the Hungarian plains.

This castle was designed to have as many windows as there are days in the year.

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

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