The massive gardens and office of a Brazilian sculptor.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

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

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

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

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

When you're a great Russian Tsar, even your vomit gets a statue.

Meet the bronze beloved pet to a family of famous peeing statues.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

The Devil’s own choice when he needs a drink in Brussels.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

This statue honors the thousands of Allied avians that served and died for France during World War I.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.