VENICE, ITALY - NOVEMBER 19:  A general view of St Mark's Square with the belfry and Palazzo Ducale as thick fog shrouds the city, on November 19, 2011 in Venice, Italy. Venice woke up this morning under a heavy blanket of fog adding to the atmoshere of the city. HOW TO LICENCE THIS PICTURE: please contact us via e-mail at sales@xianpix.com or call our offices London   +44 (0)207 1939846 for prices and terms of copyright. First Use Only ,Editorial Use Only, All repros payable, No Archiving.© MARCO SECCHI