VENICE, VENETO - JULY 22:  (EDITORS NOTE: This image has been converted to black and white) A cruise ships sails along the S. Mark's Basin and is seen from the Arsenale on July 22, 2014 in Venice, Italy. Today Sir Michael Caine, Julie Christie and other celebrities signed a petition calling for giant cruise ships to be banned from Venice.  (Photo by Marco Secchi/Getty Images)