Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

This stone complex marks the urban center of a lost civilization.

An ancient knight and a symbol of the city's freedom.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

A human attendant once directed car traffic from this structure before automated stoplights.

The tragic tale of the dentist who pioneered the use of anesthesia.

A tribute to the truly loyal dog who waited outside a hospital for his owner to come back.

An abandoned gun-funded 19th century utopia.

A tiny memorial for the year the Connecticut River almost destroyed New England.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

The former location of a platform that allowed passengers to safely wait for the trolley.

Journey inside the bowels of this sperm whale sculpture.

This tribute to the founding father of the American dictionary originally contained a spelling error.

The home of a famed utopian science fiction author has been preserved long after his predicted future in the year 2000.

Memorial to one of the most fatal fires in both circus and U.S. history.

Locals say Williams' ghost still haunts the place where she was murdered.

Mass Grave of 48 colonists killed in a raid by Native Americans and the French in 1704.

A beautiful, creepy 19th-century castle stands incongruously in rural Vermont.

Who is this marble man, perpetually creeping up the steps of his own mausoleum?

A cable-suspension footbridge that hangs high above the Mill River.

This cavernous abandoned marble mine is popular with ice skaters in the winter.