 The Battle of Gettysburg is widely known as one of the bloodiest battles in the American Civil War. More than 50,000 men were killed, wounded or lost in action. Today, anyone who visits Gettysburg can testify to the creepy sights and sounds that they'll find there. You can even take a ghost tour. Some say that up to 10,000 soldiers still haunt the battlefield to this day, from ghostly apparitions on the battlefield to eerie noises to odd lights. Visitors report a wide variety of odd occurrences on the actual battlefield. Visitors also report doors that lock on their own, lights that flicker and objects that move freely.