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

Home to the most complete dodo remains known - one head, and one foot.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

At 207 feet, one of the world's longest continuous escalators.

The site of the climactic scene from the classic horror film is now a historic landmark.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A sprawling collection of over 106,000 toys from around the world.

"I did this all while you were watching TV."

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Traveling collection of amazing automata.

An unusual round church in London with a Templar past.

A cluttered and astounding collection of antiquities and curiosities.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

One part local history, 99 parts gruesome haunted house.

Narrowest house in Boston.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

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

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

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

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.

One of America's most historic homes also holds a startling literary legacy.