A general view shows people walking across the flooded St. Mark's Square, by St. Mark's Basilica on November 15, 2019 in Venice, two days after the city suffered its highest tide in 50 years. - Flood-hit Venice was bracing for another exceptional high tide on November 15, as Italy declared a state of emergency for the UNESCO city where perilous deluges have caused millions of euros worth of damage. (Photo by Filippo MONTEFORTE / AFP) (Photo by FILIPPO MONTEFORTE/AFP via Getty Images) ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **

13 Images

Venice submerged by worst flooding in half a century

The flooded St. Mark’s Square, by St. Mark’s Basilica in Venice. (Filippo Monteforte / AFP/Getty Images)

A woman tries to cross a flooded street as people walk on a trestle bridge during high water, in Venice, northern Italy, Friday, Nov. 15, 2019. Exceptionally high tidal waters returned to Venice on Friday, prompting the mayor to close the iconic St. Marks Square and call for donations to repair the Italian lagoon city just three days after it experienced its worst flooding in 50 years. (Andrea Merola/ANSA via AP)

A woman tries to cross a flooded street as people walk on a trestle bridge during high water in Venice. (Andrea Merola / Associated Press)

Mandatory Credit: Photo by ANDREA MEROLA/EPA-EFE/REX (10475988k) People row a small boat in high water in Venice, northern Italy, 15 November 2019. Venice closed St Mark's Square due to fresh flooding in the city. The city is currently suffering its second-worst floods on record, with the high-water mark reaching 187cm on Tuesday. The water level had dropped down significantly but it is forecast to go back up to 160cm today. High water in Venice, Italy - 15 Nov 2019 ** Usable by LA, CT and MoD ONLY **

People row a small boat in high water in Venice. (Andrea Merola / EPA/REX/Shutterstock)

People carry their luggages in the flooded street near Rialto bridge, on November 15, 2019 in Venice, two days after the city suffered its highest tide in 50 years. - Flood-hit Venice was bracing for another exceptional high tide on November 15, as Italy declared a state of emergency for the UNESCO city where perilous deluges have caused millions of euros worth of damage. (Photo by Filippo MONTEFORTE / AFP) (Photo by FILIPPO MONTEFORTE/AFP via Getty Images) ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **

People carry their luggage in a flooded street near Rialto bridge in Venice, two days after the city suffered its highest tide in 50 years. (Filippo Monteforte / AFP/Getty Images)

Mandatory Credit: Photo by ANDREA MEROLA/EPA-EFE/REX (10475988p) People wade through high water in Venice, northern Italy, 15 November 2019. Venice closed St Mark's Square due to fresh flooding in the city. The city is currently suffering its second-worst floods on record, with the high-water mark reaching 187cm on Tuesday. The water level had dropped down significantly but it is forecast to go back up to 160cm today. High water in Venice, Italy - 15 Nov 2019 ** Usable by LA, CT and MoD ONLY **

People wade through high water in Venice. (Andrea Merola / EPA/REX/Shutterstock)

People wade through water in a flooded St. Mark's Square in Venice, Italy, Wednesday, Nov. 13, 2019. The high-water mark hit 187 centimeters (74 inches) late Tuesday, Nov. 12, 2019, meaning more than 85% of the city was flooded. The highest level ever recorded was 194 centimeters (76 inches) during infamous flooding in 1966. (AP Photo/Luca Bruno)

People wade through water in a flooded St. Mark’s Square in Venice. (Luca Bruno / Associated Press)

People use a makeshift footbridge to exit a flooded hotel after an exceptional overnight "Alta Acqua" high tide water level, on November 13, 2019 in Venice. - Powerful rainstorms hit Italy on November 12, with the worst affected areas in the south and Venice, where there was widespread flooding. Within a cyclone that threatens the country, exceptional high water were rising in Venice, with the sirocco winds blowing northwards from the Adriatic sea against the lagoons outlets and preventing the water from flowing back into the sea. At 22:40pm the tide reached 183 cm, the second measure in history after the 198 cm of the 1966 flood. (Photo by Marco Bertorello / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images) ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **

People use a makeshift footbridge to exit a flooded hotel after an exceptional overnight high tide water level in Venice. (Marco Bertorello / AFP / Getty Images)

A room in the flooded Gritti Palace is pictured during an exceptional "Alta Acqua" high tide water level on November 12, 2019 in Venice. - Powerful rainstorms hit Italy on November 12, with the worst affected areas in the south and Venice, where there was widespread flooding. Within a cyclone that threatens the country, exceptional high water were rising in Venice, with the sirocco winds blowing northwards from the Adriatic sea against the lagoons outlets and preventing the water from flowing back into the sea. At 22:40pm the tide reached 183 cm, the second measure in history after the 198 cm of the 1966 flood. (Photo by Marco Bertorello / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images) *** BESTPIX *** ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **

A room in the flooded Gritti Palace. (Marco Bertorello / AFP / Getty Images)

People mop the floor of the flooded St. Mark's Basilica after an exceptional overnight "Alta Acqua" high tide water level, on November 13, 2019 in Venice. - Powerful rainstorms hit Italy on November 12, with the worst affected areas in the south and Venice, where there was widespread flooding. Within a cyclone that threatens the country, exceptional high water were rising in Venice, with the sirocco winds blowing northwards from the Adriatic sea against the lagoons outlets and preventing the water from flowing back into the sea. At 22:40pm the tide reached 183 cm, the second measure in history after the 198 cm of the 1966 flood. (Photo by Marco Bertorello / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images) ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **

People mop the floor of the flooded St. Mark’s Basilica after an exceptional overnight high tide water level in Venice. (Marco Bertorello / AFP / Getty Images)

A tourist pushes her floating luggage in a flooded St. Mark's Square, in Venice, Wednesday, Nov. 13, 2019. The high-water mark hit 187 centimeters (74 inches) late Tuesday, Nov. 12, 2019, meaning more than 85% of the city was flooded. The highest level ever recorded was 194 centimeters (76 inches) during infamous flooding in 1966. (AP Photo/Luca Bruno)

A tourist pushes her floating luggage in a flooded St. Mark’s Square in Venice. (Luca Bruno / Associated Press)

Mandatory Credit: Photo by ANDREA MEROLA/EPA-EFE/REX (10473606l) A view of a ferry stranded on the docks following bad weather in Venice, northern Italy, 13 November 2019. A wave of bad weather has hit much of Italy on 12 November. Levels of 100-120cm above sea level are fairly common in the lagoon city and Venice is well-equipped to cope with its rafts of pontoon walkways. Flooding in Venice, Italy - 13 Nov 2019 ** Usable by LA, CT and MoD ONLY **

A view of a ferry stranded on the docks following bad weather in Venice. (Andrea Merola / EPA / REX / Shutterstock)

Tourists take pictures in a flooded St. Mark's Square, in Venice, Wednesday, Nov. 13, 2019. The high-water mark hit 187 centimeters (74 inches) late Tuesday, meaning more than 85% of the city was flooded. The highest level ever recorded was 194 centimeters (76 inches) during infamous flooding in 1966. (AP Photo/Luca Bruno)

Tourists take pictures in a flooded St. Mark’s Square in Venice. (Luca Bruno / Associated Press)

A general view shows a man crossing the flooded St. Mark's Square after an exceptional overnight "Alta Acqua" high tide water level, on November 13, 2019 in Venice. - Venice was hit by the highest tide in more than 50 years late November 12, with tourists wading through flooded streets to seek shelter as a fierce wind whipped up waves in St. Mark's Square. (Photo by Marco Bertorello / AFP) (Photo by MARCO BERTORELLO/AFP via Getty Images) ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **

A man crossing the flooded St. Mark’s Square after an exceptional overnight high tide water level in Venice. (Marco Bertorello / AFP / Getty Images)