This bridge was the birthplace of a unit of measurement based on a fraternity joke.

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

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This historic patch of real estate offers a glimpse of colonial Boston.

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

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

Shop of curiosities with a dinosaur museum tucked in its basement.

An enormous park-like oasis, full of famous Chicagoans' graves.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

Less a museum than a bizarre fantasy world created by artists and engineers.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A little sculpture with a large wardrobe.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."