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

A Serbian church lit by chandeliers made of weapons.

A misnamed well, with a deep dark past.

This historic black and white monastery is one of Bulgaria's architectural jewels.

Sofia's legislative center is continuously reinventing itself.

A collection of art from Bulgaria's time as a communist state.

Eastern Bloc nostalgia, anybody?

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

A striking symbol of the Bulgarian capital.

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

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

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

An abandoned masterpiece of Soviet Brutalist architecture.

The oldest funicular in Lithuania has been climbing this steep hill since 1931.

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

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

A dark, narrow tunnel that leads to a charming lake and waterfall.

One of the best-preserved medieval streets in Europe.

You'll find just about anything in this funky Tbilisi flea market.

The charmingly disheveled clock tower of Tbilisi's puppet theater.