340-foot statue built to honour the Heroes of the Soviet Union.

A castle perched precariously over the Crimean Sea.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A striking symbol of the Bulgarian capital.

A vast Communist-era exhibition space in the Bulgarian capital.

What happens when you cross a mayor and a painter?

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

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

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

Oriental bazaar in the heart of Sarajevo.

The place where World War I began.

Bridge that died in war and was resurected.

An ancient knight and a symbol of the city's freedom.

Humble beginnings for one of the world's most famous scientists.

A musical instrument played by the sea.

A whimsical bridge adorned with decorative dragons.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

The silly symbol for an underground protest group is now scattered around the city.

This micro-nation may be some sort of prank, but its constitution sure seems official.