Stroll through retro Paris while shopping for old postcards and discarded doll heads.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Sofia's legislative center is continuously reinventing itself.

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

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

Eastern Bloc nostalgia, anybody?

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

Romania's triumphal arch looks out over Bucharest.

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

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

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

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

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

What happens when you cross a mayor and a painter?

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

A pair of connected skyscrapers form this symbolic gateway.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

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