Parts of an early Christian and Visigothic episcopal complex including the baptistery (fourth century), a basilical hall (fifth century), a cross shaped church (sixth-seventh century) and bishop's palace (sixth-seventh century) are displayed in Barcelona City History Museum archaeological underground. Reportedly, this Visigothic chapel was dedicated to Saint James, and was the proprietary church of the Viscounts of Barcelona. However, in a document from the Second Council of Barcelona in 599, it states that the cathedral was dedicated to the Holy Cross. This church was severely damaged by al-Mansur (Almanzor) during his attack on Barcelona in 985.