When 15th-century Venetian girls preferred sailors to saints, they often had to do a penitential stint at the convent adjoining this remarkable church. A hotchpotch of Romanesque, Gothic, Renaissance and baroque, it represents centuries of the wealth of disgruntled parents. Don't miss Bellini's melancholy Virgin or Tiepolo's version of the flight into Egypt via Venetian-style boat. For €1, you can also visit hidden chapels and the waterlogged, 10th-century foundations.