Giovanni Carlo Galli-Bibiena ( 11 August 1717 Bologna - 20 November 1760 Ajuda, Lisbon), architect/designer, the son of Francesco, designed the staircase of Palazzo Savini and a chapel, the Cappella di San Antonio in San Bartolommeo di Porta Ravegnana in Bologna, and the decorative scheme for the high altar of the San Petronio Basilica, Bologna, for the Bolognese Pope Benedict XIV. From 1752-55, he designed and built the Ópera do Tejo in Lisbon, but the opera house was destroyed seven months after completion by the 1755 earthquake. He died five years later.