A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

A fantastic Christmas tradition where defecation meets the manger.

Giant topiary dog once played a role in a terrorist bomb plot.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Elevated freight railway turned wildly successful urban park.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This unusual 7th-century Frankish seal offers more questions than answers about its past.

A 16th-century footpath said to be haunted by a young girl that died trapped within its misshapen old house.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

This museum houses two of Mexico's most impressive Aztec monoliths.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

The only castle in North America to ever house European sovereigns.

The famous artist couple lived and worked here, in two different houses connected by a bridge.

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

This skewed English house has looked like it's going to fall over for centuries.

One of England's most famous churches hides a pair of little known architectural treasures.