An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.

A futuristic, brutalist masterpiece that is also strangely prison-like.

A 11-foot former president stands on a Kosovo street that also bears his name.

An iconic Soviet statue of working-class people.

Moscow's imposing monument to the Space Age.

The "Mystery and Company of Merchant Adventurers" is an Elizabethan-era hangout in Moscow.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

World's largest bell sits on the grounds of the Kremlin in Moscow.

An Art Nouveau building covered in animal gargoyles and grotesques.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

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

This street has over a half-dozen names, all at once.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

This 13th century Orthodox monastery is built right into the Moldovan cliffside.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

A vivid and terrifying mural blends pop-culture-style depictions of Hell with traditional Orthodox imagery.

A unique collection of Soviet military artifacts lies hidden away in a disused train, in the unrecognized Eastern European republic of Transnistria.

This often-missed monastery, set in a scenic mountain landscape, features unique frescoes, fortifications and legends.

This small shrine is dedicated to the designer of the first Russian fighter jet and his brother, who became Chairman of the Presidium of the Supreme Soviet.

An unusual double-stelae obelisk with ancient and mysterious origins.

The ruins of a medieval monastery built on a perilous slope.

Unique Armenian monastery from the 13th century, reclaimed by nature but still welcoming visitors.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.