Black lantern within St. Mark's Cathedral Photography is forbidden in St. Mark's Cathedral. However everyone around me was taking pictures. The peer pressure was too much and I broke out my camera and started shooting. You have to shoot quickly and you cannot have a tripod. A big tripod and a slow photographer would attract too much attention from the understaffed guards. A discrete photographer with a high ISO and a steady hand is able to come back with a few good pictures of this incredible historic religious building. The mosaics are breathtaking, truly magnificent. Please enjoy. The floor is a rolling irregular mosaic Golden chest from the Treasury Gold Mosaic of Christ washing the feet of Peter Incredible Golden Dome Inner Sanctum Mosaic detail Enormous mosaic of the house of Israel and all the branches. This was huge. Angel slaying a dragon