A well-preserved example of an early industrial operation in the northeastern United States.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

World's first "penitentiary," meant to be humane, drove men insane.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

This forlorn park is the result of a failed investment turned tax dodge.

A nearly 100-year-old dining car in upstate New York embodies the golden age of roadside dining.

A massive sustainable farm designed by the mastermind behind Central Park.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

Restoring faith in humanity one pie at a time by selling stellar baked goods on an honor system.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

The mounds at this site were reconstructed with the help of archaeologists and historians.

The largest earthwork effigy in the world.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

An interesting look into 18th-century American history.

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

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

The summer estate of John Weeks offers dazzling views and a moose captured by Theodore Roosevelt.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

A showcase of geologic history is home to one of the largest collection of lunar meteorites on Earth.

Turns out you can see the world without ever leaving Maine.

A very big rock just plopped down in the New England woods.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

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