Tourists walks on the ancient walls of Cagliari, Cagliari province, Sardinia, Italy, Mediterranean, Europe

photography colour colour image color color image horizontal horizontal image outdoors outside day background people incidental people people in the background travel travel destination travel destinations medieval cagliari cagliari province sardinia italy italian mediterranean europe european building exterior building buildings architecture architectural history historical historic heritage city walls tourist destination town walls elevated view stone facade old ruin ruins ruined old ruins remains diminishing perspective vanishing point perspective old town tourist tourists holiday maker holiday makers on holiday