With its gabled domes of Byzantine inspiration, extravagant crowned tympanums, marble and polychrome mosaics, Saint Mark's Basilica is renowned for its delicate and rich ornamentation, particularly when the midday sun picks out the tiniest details. At night time, candle light enhances the curved lines and gold and silver glass tesserae. Don't miss the Pala d'Oro, whose high-altar is a masterpiece embellished with precious stones.