Even Henry David Thoreau found this glacial pothole irresistible.

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

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

A stunning garden filled with fantastical environmental folk art and sculptures.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

The mansion home of author Edith Wharton.

A beautiful, creepy 19th-century castle stands incongruous in rural Vermont.

The Boston square dedicated to the dark poet who was born nearby.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

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

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Statue commemorating the use of ether in anesthesia.

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

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

In Gloucester, Massachussets, fishermen celebrate a successful year at sea by charging a lubed pole to capture an Italian flag.

A steampunk wonderland that preserves America's history of industrial innovation.

This supermarket is suspended 25 feet above an interstate highway.

America's "second most important bell" is a contentious spoil of the Civil War.

This dam in the woods, built by Henry Ford with only manpower and oxen, holds no water and serves no purpose.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

No one really knows how these old hobby horses got here, but the herd keeps growing.