Though the current iteration of the USS Constellation in Baltimore Harbor was built in 1854, it's thought that some parts of the original ship were used. Visitors report hearing voices and catching glimpses of spectral sailors walking the deck. In 1955, a Naval photographer with a camera captured something remarkable. Just before midnight, a man appeared on deck in military uniform. A picture was taken. The photo was published in The Baltimore Sun, and dated the man's uniform to the late 1800s.