Remember to bring along a camera with high speed film. Churches It is said that many of the churches that are over 100 years old have a ghost or two. Try to spend a night in one if possible. Try to interview actors and the tech crew for stories of the ghosts. Schools Really old ones are good for a spirit or two.
Many schools have ghosts.
Many are in the gym or the bathrooms. Especially the girls' toilet. Ask the maids about the ghost, too. Prisons Prisons have ghosts, even ones that are not used as prison anymore. Also places where slaves were held long ago and places where prisoner's of war were kept.