70mm blow-up version released in Australia and Sweden.
Burt Lancaster wore a patch over a good right eye for his character. Peter Falk, having lost his right eye at age 3, wore a glass eye.
Ronald "Butcher" DeFeo Jr. claimed he was watching this movie before he shot his parents and four younger siblings to death in Amityville, NY in 1974.
The castle set in Yugoslavia blew up and burned to the ground. It was quite a surprise to the cast and crew. Sydney Pollack immediately grabbed the camera and shot what he could of the burning castle.