The initial settlement was situated in what is now the old quarter in the eastern side of the city. Centuries of Portuguese rule were interrupted in World War II, when Dili became the site of a battle between Allied and Japanese forces. The damaged city returned to Portuguese control following the war. In 1975, a civil war between Timorese political parties broke out, leading to a declaration of independence and a subsequent invasion by Indonesia. Under Indonesian rule infrastructure in the city was developed, with landmarks such as the Immaculate Conception Cathedral and "Cristo Rei of Dili" being built during this time. The city expanded as its population grew to over 100,000 people.