Many rock climbers have come to conquer this slender sea stack, with various degrees of success.

It's said that visitors can "see" Tasmania inside this cave.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

The largest arcade museum in the world chronicles the golden age of video games which ended promptly in 1987.

Memorial to a beloved puppeteer as well as all street performers.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

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

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

This hidden labyrinth offers walkers some brief peace of mind.

Impossibly life-like natural history models created out of glass by a father and son.

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

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

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

An eccentric inventor's castle home with its own indoor weather system.

The magic's in the hole!

The most photographed house in Maine looks good enough to eat.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

The only remaining historic maritime signal station in the United States.

Its unique collection details the history of the state's svelte railroads.

This picturesque abandoned home is rumored to be a spite house.

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

One man’s hobby is another man’s world of metal wonders.