Ghost sightings have been a widespread phenomenon ever since the beginnings of recorded human history, and possibly beyond. There are references to supernatural sightings in ancient texts dating as far back as ancient Egypt, Babylonian religions and classical Antiquity. The most commonly held belief is that ghosts represent the souls or spirits of a dead person (or animal), in a form that can be seen by the living. The details can vary wildly, with reports ranging from ghosts that appear to be completely human and able to be touched, to circular orbs that seem to drift in and out of reality. The idea of ghosts as physical representations of the dead has pervaded human culture across the globe. In particular, many religious practices such as exorcisms and funeral rites are supposed to put the souls of the dead to rest. While a fear of ghosts is common, there are also cultures around the world that embrace the idea of souls returning from the afterlife, with festivals such as China's Ghost Festival and Mexico's Day of the Dead. This list takes a look at 10 of the creepiest ghost sightings that have ever been captured on film. The authenticity of each entry is up to you to decide, but many make a convincing argument of the supernatural's existence. Turning on all your lights and having a pillow to hide behind is strongly recommended!