This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

A rapidly disappearing glacier filled with extinct grasshoppers, perfectly preserved in the ice.

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

New fungal and bacterial species call this deadly lake home.

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

These pink granite water slides are the result of millions of years of erosion.

Often referred to as the largest spring in America.

One of the deepest springs in Missouri.

Erosion and time have created a naturally-formed water park.

Curious cave that stays a cool 56 degrees all year long.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

"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."

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Over 50 whirling pools left behind from the glacial age.

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

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

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.