One of the newest mosques in a city filled with thousands.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

The eclectic home of a leading Turkish architect is a gorgeous piece of eye candy.

The most metal church of all time was built in record time because of an international, pious pissing contest.

Byzantine emperors ruled, lived, and died in this 13th-century palace-turned-museum.

Have tea in a cemetery with a dazzling view of Istanbul.

Large miniature theme park with 100-plus models.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

The Grand Mall in Varna hosts one of the biggest collections of Soviet-era paraphernalia in Bulgaria.

Crossing a suspension bridge above a forest is the only way to reach this 12th-century monastery.

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

Founded in the 4th-century, the town of Pernik plays host to the Surva Carnival⁠—a magnificent display of masked Kukeri dancers.

One of the largest mines in Bulgaria is now home to a vast museum more than 100 feet underground.

Sofia's legislative center is continuously reinventing itself.

This building has two facades of clashing architectural designs.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

A striking symbol of the Bulgarian capital.

Eastern Bloc nostalgia, anybody?

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

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

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

A flamboyant five-story building in Bulgaria resembles a crawling snail.

The Bulgarian royal family exclusively used this ornate, now-abandoned train station.

This metro station doubles as an unintentional paleontology museum.