Extreme flooding puts famous Venice landmarks underwater

The worst flood in 50 years has swept through Venice and the water is threatening centuries-old landmarks and art, according to the In The Know video above.

The city is dealing with over six feet of water following a storm on Tuesday and has called for a state of emergency to be in effect. At least one man has died as a result.

The water levels are the highest they've been since 1966. Mayor Luigi Brugnaro says that the damage caused already to the city has been huge, which sparked demands from citizens to better improve the city's flood defenses.

Watch the In The Know video above to see the flooding.