The church of San Giuliano is one of the oldest places of worship in Erice, dedicated to San Giuliano, martyred in 254 AD. It was so important that Mount Erice until 1934 took its name from the saint.
Its construction was commissioned, according to tradition, by the Norman Grand Count Roger, but in reality it seems to date back to the first centuries of Christianity. It was rebuilt between 1612 and 1615, more imposing and with three naves. In 1927 it was closed due to a collapse and reopened after almost 80 years on December 26, 2005.