• Italy
    8 July 1966
    (Turin)
  • Italy
    6 August 1966
    (Milan)
  • Italy
    19 August 1966
    (Rome)
  • USA
    8 October 1967
    (Pittsburgh, Pennsylvania)
  • Colombia
    5 March 1970
  • West Germany
    13 March 1970
  • Japan
    26 May 1973
  • Netherlands
    23 April 1996
    (Amsterdam Fantastic Film Festival)
  • Italy
    16 October 2014
    (restored version) (Rome Film Festival)