San Diego is best known for being “America’s Finest City”, but like most locations, it also has a stranger, darker side, built on speculation, myths, rumors, and legends. With Halloween just around the corner, along with the shorter days and cooler nights of fall, now is a great time to explore these thirteen locations to search for monsters, ghosts, aliens, and whatever else may be out there. I’ve compiled this list from my experience and from what “evidence” is present in the public domain about these spots. I’ve subjectively ranked the spots from “most active” to “least active”, or for the skeptical readers out there, from “most credible” to “least credible”. Irrespective of how you feel about the supernatural, this is a great list of San Diego locations that add historic flavor to a fine city that are worth a visit.