The massive machine creates cracking displays of indoor lightning.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This exhibit is devoted to the games and wonder that Hasbro has brought children worldwide.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Connecticut grave of the woman responsible for the Winchester Mystery House in California.

The cave where two British judges hid in exile after sentencing the king to death.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

America's oldest archaeological site or a muddled case of wishful thinking.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

An astounding collection of medical specimens, including bits of President Lincoln.

Located in a veterinary school, this macabre exhibit displays the effects of animal diseases.

A free, public museum dedicated to the fascinating science of sight.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A psychedelic labyrinth on the San Francisco bay.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

The monument dedicated to Phineas Gage in the town where his accident happened.

Two distinctive homes on a New England village green look like a couple of frosted wedding cakes.