An extraordinary collection of treasures await inside Palazzo Leoni Montanari, among them ancient pottery from Magna Graecia and grand salons filled with Canaletto’s misty lagoon landscapes and Pietro Longhi's 18th-century satires. A recent addition is Agostino Fasolato's astounding The Fall of the Rebel Angels , carved from a single block of Carrara marble and featuring no less than 60 angels and demons in nail-biting battle. Topping it all off is a superb collection of 400 Russian icons.