"Ghost Adventures" is a television program about paranormal investigations that has been airing on the Discovery Channel since 2008. The hosts of the show are Zak Bagans, Nick Groff, and Aaron Goodwin, who aim to prove the existence of supernatural forces. They use various equipment to detect and document signs of supernatural activity, including electromagnetic fields, thermal cameras, audio and video recordings. Each episode of the show is a video diary of events that take place in different locations known for their supernatural phenomena. Bagans, Groff, and Goodwin visit famous houses, castles, hotels, psychiatric hospitals, and other areas where, according to urban legends, ghosts and spirits reside.