People walk across the flooded San Marco Square in Venice, Italy, Nov. 13, 2019. Residents of the flooded city of Venice are calling for an ambitious flood protection plan, first drawn up decades ago, to be completed, despite worries from environmental groups that the plan could cause ecological damage to the surrounding area. Floodwaters in the northern Italian city have reached as high as 187 centimeters, the highest level since the historic flood of 1966. (Photo by Alberto Lingria/Xinhua)