All that remains of this Massachusetts town, demolished in the name of progress, is a stone marker.

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

Where Eunice Williams was murdered by natives, and where locals say her ghost still haunts.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

Two thirds of this Montreal neon icon has survived to flash another day.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

This decrepit abandoned building is made all the more eerie by its dark history.

The mighty room where the poet spent most of her life is available to rent for an hour or two.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

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

An important landmark in the history of algebraic logic.

Just another ancient, mysterious Irish stone circle.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

Oliver Cromwell once seized the land under this house, which included the ruins of a medieval abbey that the owner used to build his stately home.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

Behemoth, cannon-like telescope operated by generations of Irish earls.

The world's tallest box hedge is found in a delightful garden.

An 1814 castle that hosts an exhibit of "explorabilia".

Obelisks and stone pineapples in the Irish countryside.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

The ancient tomb acts as a calendar that keeps perfect time.

An ancient neolithic tomb that only sees the sun twice a year.