The only subterranean ping pong table in Atlanta.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The massive machine creates cracking displays of indoor lightning.

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

Impossibly life-like natural history models created out of glass by a father and son.

"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."

Beautiful steampunk ghosts of early Massachusetts.

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

The site of Paul Revere's historic two lantern warning.

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

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

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

An eccentric inventor's castle home with its own indoor weather system.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

Former abode of notable poet, complete with literary references and stories of ghosts.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.