An alley way dedicated to graffiti and street art is a constantly changing street gallery.

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

This landmark cemetery in Boston was created more than 300 years ago.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

Over fifty whirling pools left by the glacial age.

Three prestigious academic collections come together to create a world-class natural history museum.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Friction between grains of sand cause a curious "singing" sound.

A collection of full-size movie monsters opened to the public.

The Boston square dedicated to the dark poet who was born nearby.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The celebrated eyesore created by starry-eyed sweethearts.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

France's most famous cemetery, with some of its most curious tombs.