The rubber duck races on the Passer River.
They are fun for the whole family yet service a charitable purpose: the two rubber-duck races on the section of the Passer River between Ponte della Posta and Ponte Teatro. The first race on April 20 is a sponsor rubber-duck race at 11:00 a.m., followed by another rubber-duck race at noon, where the ducks can be "adopted" at a price of 5€. The money goes to charity. Prizes are awarded to the first 100 places.