This ingenious engineering solution was built to stop the "theft" of canal water.

The interior of this church has been turned into a memorial to locals who died in Croatia's Homeland War.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

At almost 1,000 years old, this is the oldest known door in all of Britain.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

Overlooking the spot where the Pilgrims boarded the Mayflower stands Devon's answer to the Colossus of Rhodes.

A 1930s Art Deco swimming pool with a design inspired by grand ocean liners.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The accidental discovery of this gilt bronze head led archaeologists to find the Roman Baths in the city of Bath

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

Pop culture has helped to keep this iconic British building from being destroyed.

The world’s oldest active sailing ship.

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

These ornate, fish-shaped water spouts guard Savannah’s historic facades.

This museum covers 10,000 years of Pre-Columbian Latin American history.

Double spiral staircases are not unheard of, but they are very rare.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

This small, easily-overlooked sculpture recalls the first time Graz saw a live elephant.