Fortifications built for a Soviet invasion that never came now sit abandoned in a losing battle against nature.

This disused church, left to the elements of the Arctic Circle's forests is open for exploration.

A 246-foot-high revolving restaurant rises unexpectedly from a forested Finnish hilltop.

Collection of nearly 500 concrete figures sculpted by the late Veijo Rönkkönen.

Hidden deep in a forest is this geological wonder carved by glaciers.

This lake-bound geographical marker sits at the point where three European countries intersect.

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

An abstract monument to a symphonic composer.

An alien church provides much needed silence in the midst of a Finland shopping center.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

A subterranean house of worship carved right out of the bedrock.

The abandoned village of Skarð aptly illustrates the idiom "Don't put all your eggs in one basket."

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

This remote island village was in danger of depopulating completely until a tunnel was built to connect it to the rest of the world .

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

This isolated island is often capped by its own fluffy cloud.

One of the oldest lighthouses in the world has been in continuous use since it was first built in 1531.

A wooden replica of France's famous tower.

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

For the last century, this international border within a small town has appeared and disappeared various times.

This stunning limestone waterfall is the highest in Estonia.

This set of concrete chambers resonates according to different notes of octaves.

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