The oldest continuously-operated inn in the United States, once owned by Henry Ford.

Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

Ice cream stand, snack bar, and time capsule of milk conveyance.

No one messes with the Massachusetts sacred cod, not this time...

A men’s restroom became a sandwich shop.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

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

A former ironworks that was the first UNESCO industrial site.

San Francisco's newly reopened hands-on science museum.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

100 massive sculptures in the Hudson River Valley.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

More than 200 unconventional musical instruments that anyone can play.

Over 50 whirling pools left behind from the glacial age.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Solar powered Spectacle Island features all-green facilities.

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

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

Utopia and nostalgia mingle at the site of Bronson Alcott's ill-fated agrarian commune.

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.