Santa Margherita d'Antiochia The church is located in the main square of the town of Vernaza, Gullermo Marconi Square (Piazza Guglielmo Marconi). The Gothic Ligurian-style St. Margaret's Cathedral was built in 1318 on a rock in front of the sea and retains the 11th century architecture. The highly impressive octagonal bell tower is 40 m high and is placed on four old styles.