This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

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

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

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

"Mock all and sundry things, but leave the saints alone."

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

It's not a typo, now say it five times fast!

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

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

"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."

The bears may be gone, but their old cages can still be found.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

Over fifty whirling pools left by the glacial age.

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

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

A collection of full-size movie monsters opened to the public.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

A short volcanic hill in Quito doubles as a stellar observation point of an iconic statue.