VENICE, ITALY – OCTOBER 29: A couple of tourists walk in “Piazza San Marco” on October 29, 2018 in Venice, Italy. Due to the exceptional level of the “acqua alta” or “High Tide” that reached 156 cm today, Venetian schools and hospitals were closed by the authorities, and citizens were advised against leaving their homes . (Photo by Stefano Mazzola/Awakening/Getty Images)