Dublin acquired a second cathedral, St Patrick's, built outside the city walls by an archbishop anxious to keep his freedom of action from the city's government, and chartered in 1191. In addition to his palace of Saint Sepulchre (where Kevin Street Garda station is situated today) the archbishop had his castle at Swords. The abbot of Saint Mary's Abbey had his castle at Bulloch Harbour near Dalkey, where he levied customs duties on all imported goods. At that time, Dalkey was a busy commercial port.