The Queen Mary in Long Beach
The ocean liner-turned-hotel known as the Queen Mary is considered by many to be a hotbed of paranormal activity, and with her long and often violent history, it's no wonder. Known as the Grey Ghost during World War II, the ship was avoiding enemy fire by zigzagging through the water when she crashed into the Curacoa, her companion ship. The vessel cracked in half, but Queen Mary was ordered to leave the 300 passengers to drown. They're sometimes heard banging on the hull at the front end of the ship, begging for rescue.
Photo courtesy of The Queen Mary