This massive boulder is inscribed with the story of a sensational hostage negotiation dating back to Colonial times.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

This cemetery is home to numerous granite headstones that are works of art unto themselves.

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

This small shop walked so America could run on Dunkin'.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

Once the largest public hospital for the mentally ill was also surrounded by controversy.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

This tower pays homage to a legendary Viking fort established in Massachusetts that never really existed.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

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

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

The only surviving fragment of the lost Narragansett Pier Casino.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

This 50-foot rock formation looked like a face that was once believed to be that of a Native American chief.

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

The world's largest private aircraft collection.

Surrounded by lonely toys, this Massachusetts gravestone marks the final resting place of six children who were murdered by poverty.

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

This exuberantly curated landscape is one of the largest sculpture gardens in Canada.