This medieval fortress is (or was till 2017) the home stadium of the football club FC Duruji Kvareli.

The castle that provided the setting for much of 'Monty Python and the Holy Grail' is now a pilgrimage site for fans.

More than 10,000 small mirrors cover the curved surface of the world's second-largest solar oven, located in a remote village in Uzbekistan.

Home to what was once considered the largest gate in central Asia.

The foundation of this ancient stupa dates back to the 1st-century.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

The heartbeat of modern Uzbekistan’s thriving market culture.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

For centuries, Germans have been dancing in trees.

A statue of the Soviet leader still stands in a quiet corner of Estonia’s most Russian city.

A large boulder was declared a local landmark by a popular vlogger.

An abandoned textile factory on the "island of crows" was home to Estonia's first workers' strike.

This abandoned office building is a lasting example of Soviet-era architecture.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

A medieval setting reimagined into a unique art alley.

Hundreds of unusual wheel crosses poke above the earth in this small Estonian cemetery.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

Relics from an era long gone, sit idle outside this Estonian museum.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.