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

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

A freighter full of exotic animals ends a harrowing voyage impaled on uncharted rocks in the Boston Harbor.

In a town that's had a whole lot of giant chairs this one still stands tall, just not the tallest.

All that remains of this Massachusetts town, demolished in the name of progress, is a stone marker.

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

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

The site of the first "historically true" UFO encounter in the U.S.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

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

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

This roadside attraction attracts kids with dinosaurs before blindsiding them with geology.

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

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

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

The bears may be gone, but their old cages can still be found.

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

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

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

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

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

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

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

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