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

This stunning limestone waterfall is the highest in Estonia.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

The widest natural waterfall in Estonia is a sight to see in all seasons.

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

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

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

The Guardian of Tallinn.

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

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

Absolutely no saxophones in the library.

A scale model of the world's largest existing lensed telescope.

The signatures of esteemed colleagues of the physicists who stopped by to attend lectures.

A response to the wrongly placed meridian of the same name.

Celebrating the Swedish ship used in the first Arctic expedition to navigate through the Northeast Passage.

An abstract representation of weather in Sweden.

A forest park outside Tallinn full of architectural and artistic curiosities.

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

A spectacular Petrine Baroque summer palace commissioned for Catherine I by Peter the Great.

Sweden's oldest street has not changed for nearly a millennium.

A tiny town hall—in Sweden's one-time capital—might be the smallest in Europe.

A Swedish phone box converted into an informal village library.