The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

This landmark cemetery in Boston was created more than 300 years ago.

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

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

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

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

A beautiful Victorian-era cemetery, complete with a miniature village.

An enormous, inside-out glass globe built in 1935.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

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

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This historic mansion was built as a symbol of love between a husband and wife.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

The skeletal white beams stand as a monument to religious dissent.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

The ruined remains of a coal mining ghost town are hidden within the woods.

Few other hotels can rival the grandeur of the Castle in the Rockies.

The ruins of the "20-year town" lay out among the mountains of Alberta.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

This university transit system is a 1970's vision of the future.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.