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

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

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

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

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

Ice cream stand, snack bar, and time capsule of milk conveyance.

"Mock all and sundry things, but leave the saints alone."

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

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.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A beautiful Victorian-era cemetery, complete with a miniature village.

An enormous, inside-out glass globe built in 1935.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.