Haunted places exist across the globe. From haunted prisons to castles and schools to houses, ghosts continue to make themselves known. Learn about some of the most haunted places on Earth, such as Winchester House and Alcatraz. Then turn out the lights--if you dare.

Molly Kolpin studied English at Gustavus Adolphus College and now writes full-time. Growing up, Molly was a horse-crazy girl who collected model horses and read every horse book she could find. She recently traveled to the heart of horse country for a visit to Churchill Downs - the site where the Kentucky Derby is held each year. Molly lives in Madison, Wisconsin.