Basilica di Santa Maria in Trastevere ain Trastevere at sunset, Rome, Italy. Trastevere is rione of Rome, on west bank of Tiber in Rome. Architecture and landmark of Rome. .. Basilica di Santa Maria in Trastevere ain Trastevere at sunset, Rome, Italy. Trastevere is rione of Rome, on west bank of Tiber in Rome. Architecture and landmark of Rome.