Underground monastery and fortress.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

A museum glorifying the life of Stalin, located in the city of his birth.

Unusual building appears to be haphazardly built from randomly piled bricks.

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

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

Lithuania's outdoor sculpture trail of wooden folk art.

A narrow strip of land is home to the tallest migrating dunes in Europe.

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 memorial to the murdered Jews of Kaunas.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

3,000 market stands in five former Zeppelin hangars.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

Church built on the site where the last tsar of Russia and his family were killed.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

A collection of Lenin busts and other Soviet Era statues sit idly behind the Semipalatinsk Hotel.