The ghostly remains of an accidental sea.

A one-of-a-kind collection of a unique medium.

The rocks in this arid basin leave trails of movement behind them.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The world's largest piece of copyrighted artwork.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The largest body of water in Massachusetts annihilated four small towns just to slake Boston's thirst.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

The proud hometown of an American legend has honored their favorite son with what seems to be a gravestone.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

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

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

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

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

An 80-year-old house built out of newspapers.

Bouncing, delightful, mechanical art at the MIT Museum.

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

"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."

Trash escaped from a landfill to fill beaches with all kinds of treasure.