A former imperial sea-fortress and Soviet prison.

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

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

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

A medieval setting reimagined into a unique art alley.

The Guardian of Tallinn.

Spend your honeymoon where the Devil had his wedding.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

An icon of the Battle of Britain is frozen in flight in a grand Victorian museum.

This emblematic representation is said to bring the students good fortune.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

Believed to be the site where St. Drostan performed baptisms.

An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.

The south aisle of this church once served as a burial vault.

This severely painted building has a twisted connection to the witch hunts of the 1640s.

Wander around the extensive remains of this 12th-century medieval church.

The metal truss bridge served as the sole entry point to an "isolation island" for smallpox outbreaks throughout the 1870s and early 1940s.

This inexpensive lodging house was once a prison notorious for its inhumane practices.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

A sprawling Victorian farm that has been surrounded by a capital city is one of Canada's greatest treasures.

These locks on North America’s oldest canal are named after a porcine rock formation.