An underground nightclub helped spark a "Singing Revolution."

The oldest continuously operating pharmacy in Europe.

One of the world's oldest olive trees, thought to be over 2,000 years old.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

This floating sculpture of ice is a poignant reminder of nature's power.

A museum dedicated to secret surveillance.

Rubbing the buttons along this statue's coat is considered good luck.

This 16th-century cemetery became a recreational park during the Soviet occupation—today it's a little bit of both.

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

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

An abstract monument to a symphonic composer.

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

The first monument in Estonia that was made by an Estonian sculptor.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

This residence straddles a border between Belgium and the Netherlands.

A lovely biographical museum in the artist's home of 24 years.

A decaying, yet still functioning, work of communist architecture.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A striking symbol of the Bulgarian capital.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.