Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

This bridge is dedicated to an escaped slave and one of the first people killed in the American Revolution

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

The notorious pirate William Kidd might have buried his treasure around this local pond.

A small obelisk commemorates the launch site of the world's first liquid-fueled rocket.

It's not a typo, now say it five times fast!

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

This mosaic commemorates the oldest subway tunnel and station in the United States.

Dedicated to one of the darkest moments in Irish history.

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

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

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

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

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

Millions of numbers carved in glass represent the tattoos forced upon victims.

Touch this shamrock-shaped plaque dedicated to the longtime coach of the Boston Celtics for good luck

The last remaining 19th-century tenement from Boston's old West End neighborhood.

The massive machine creates cracking displays of indoor lightning.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

A rare 16-bedroom Qing Dynasty house re-erected on the campus of the Peabody Essex Museum.