Established in 1340 and built in Venetian Gothic style, The Doge’s Palace overlooks the tranquil lagoon and is decorated with works by artists such as Titian and Tiepolo. Having opened as a museum in 1923, the million-plus visitors a year can explore the building in its entirety, including the dungeons and prison cells, accessible by crossing the Bridge of Sighs. Iconic womaniser Casanova did time in the prison here before his miraculous escape! Tourists tend to take a few hours to venture around the Palace and absorb everything, but it’s worth the expedition.