Put your boots on for today's Geo Quiz. Venice is known as a city of canals.

But yesterday tourists in this Italian city were forced to slosh around in high boots as high tides and wind combined to create the worst flooding in 20 years.

ANDREA PATTARO/AFP/Getty Images

We're looking for the name of the city's landmark "piazza" or square. It's famous for its cafes, pigeons and view of the Grand Canal.

This square is also the lowest point in the city... so when the Adriatic Sea surges into the canals, this "piazza" is the first to flood.

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(Italian) Paolo Canestrelli, Chief of the Centre for Tidal Waves forecasts: "Yesterday we had in Venice the fourth record in the history, 156 centimeters at 10.45, a very strong event, extraordinary. It flooded _________ with at least 70 or 80 centimetres."

An official said Venice suffered the fourth worst flooding in its history. So we want you to name Venice's famous and now very wet "piazza."

We'll check-in with a local shopkeeper for the answer...