Some guys decided to check out a hill at Pleasant View Road in Lewisberry, Pennsylvania that is supposedly haunted by the ghost of dead children. They didn't find any ghosts but when they put their car on neutral at the bottom of the hill, their car miraculously goes uphill on its own. Upon closer look, they realized that they were on a gravity hill.
According to Wikipedia, a gravity hill, also known as a magnetic hill and sometimes a mystery hill, a mystery spot, or a gravity road, is a place where the layout of the surrounding land produces the optical illusion that a very slight downhill slope appears to be an uphill slope. Thus, a car left out of gear will appear to be rolling uphill due to gravity.
You want to experience it yourself? See if you're near
one.