Luca is the second largest city in Spira, home of the blitzball team Luca Goers. It also houses the only blitzball stadium in Spira. Because of this, the Crusaders, a group organized to protect the people of Spira from Sin, fought to the death in order to protect it. Blitzball was the only form of entertainment for the people of Spira during the time of Sin, and losing the stadium would have been a serious blow to their morale.