5. Gravity Hill in Altadena
Most people think Altadena is a dairy. It's also an unincorporated area of L.A. County, just north of Pasadena. It's also haunted.
Well, not really. But there's a hill on Loma Alta that's said to be haunted. There, according to local lore, if you put your car in neutral, it actually rolls uphill. There are a couple of different versions of this legend, but the most common one is about a school bus crashing decades ago; the ghosts of the dead children push your car uphill to avoid another accident, or something to that effect.
There are a number of these supposed gravity hills in California, and the general consensus is that they're optical illusions — that is, you're not actually facing uphill when you think you are.
(LAWeekly.com)