Dim sum, served in a grand old theater.

This historic Boston building has gone from personal estate to porn theater and back again.

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

The homestead of American patriot John Adams.

A castle on a hill once named "the most beautiful high school in Massachusetts."

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

Painstakingly built dioramas sit unnoticed in a Boston office building.

The poet's been ambling through these New York woods since 1940.

A monument to the first person to sail around the world solo, nowhere close to where he was born, set sail, or landed.

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

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

The first and only carousel with a lineup entirely of insects.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

A historic lighthouse steeped in rumors of ghost and pirate stories.

Collect holy water from a Bronx grotto.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

The last standing puppet theater on Long Island.