14. Venice
Venice, Italy is This medieval city is one of the most popular cities in the world. Unfortunately, it’s also listed as one of our official “11 places to see before it’s too late.” Built on an unstable lagoon, the city’s actually sinking.
Should the sea level rise 3.3 feet, it’ll be underwater. So be sure to visit while you can. Highlights here include the Grand Canal, the Doge’s Palace, Piazza San Marco, and St. Mark’s Basilica.
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