A simple stone remembers one of the most menacing horses in the Swedish military.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

The Swedish flag over this small naval fort signals that the nation is at peace.

Stockholm's narrowest alley is barely over two feet wide.

This wonky bit of historical taxidermy is experiencing a second life online.

Stockholm's tiniest statue is of a small boy looking at the Moon.

Sweden's "good old days" painstakingly re-created in a model village.

Micro-nation based around a nine-story high illegally built tower.

It houses the remains of a 17th-century version of the Titanic.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

A modern reimagining of a medieval city gate.

The Netherlands' first car tunnel has an unusually rectangular shape.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

The nerve center of a massive, state-of-the art radio telescope that sprawls across Western Europe.

This medieval castle was painted pink as part of a now-abandoned children's theme park.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

The 20-mile causeway that separates the Netherlands from the sea.

Building Men of War and Indiamen from Holland's Golden Age.

This giant wire frame man sculpture is crouched in contemplation.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.