If you like culture, you can visit some cities.
Chioggia, the little Venice, is only 20 km away. Adria, the Etruscan city, is only 30 km away. And then there is Rovigo, the city of roses.
Venice and Padua are both historic cities with many museums and activities to do.
One hour away, you can reach Ravenna, the city of mosaics, Ferrara, the city of the Italian Renaissance and Verona, the city of Romeo and Juliet.