A bridge that has seen many reiterations over its lifetime.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

Walk through the history of a Dutch truck manufacturer, from 1928 to today.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

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

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

A quiet memorial to those who died saving others in the heart of the City of London.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

This derelict superstructure was a very important warning system for the Soviet military.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Stockholm's deepest subway station is also a stunning ecological wonder.

The library's graceful rotunda is like a bibliophile's temple.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

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

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

The deepest metro station in the world.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.