Curious cave that stays a cool 56 degrees all year long.

The obelisk meant to mark the founding father's grave at Monticello is actually on the University of Missouri campus.

The iconic remains of the original Academic Hall that burned down in 1892.

Two Ming Dynasty lion statues guard the entrance to the journalism school.

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

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Statue commemorating the use of ether in anesthesia.

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

A tiny monument to the classic American candy.

One man's psychedelic fence is painted with his cacophonous folk art musings on the world.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

Three prestigious academic collections come together to create a world-class natural history museum.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

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

This is the house that spite built.

This remote island in Iowa was abandoned after being devastated by flood.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.