The massive machine creates cracking displays of indoor lightning.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

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

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

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

The site of Paul Revere's historic two lantern warning.

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

The homestead of American patriot John Adams.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

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

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

A building so large that it has its own weather.

America's most famous piece of self-built architecture.

A modern day curiosity cabinet.

Sniff the Titan Arum's rotting flesh.

Step inside Lucy, the world's largest "elephant."

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

Elevated freight railway turned wildly successful urban park.