In a city of wooden houses, this watchtower was vital for early fire detection.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

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

The design of this beautifully crafted building was inspired by Norwegian glaciers.

In downtown Oslo, a menacing and terrifying relief clings to a church wall.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

A stunning two-story timepiece within a medieval Brick Gothic church.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

This antique thermometer honors the creator of the first universal temperature scale.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

One of the world's first dedicated bank buildings in the world is now the oldest one.

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

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

America's post-nuclear-attack chambers of Congress.

A decidedly out of place statue memorializes the Blues Brothers characters at this water bottling plant.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

Abandoned Italianate architecture on the coast of Maine.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

This Chinese-style quartz sundial was saved in its final hour.