Italian colonists in the Dodecanese point for the spread of Italian culture in Greece and the Levant. The Fascist program did have some positive effects in its attempts to modernize the islands, resulting in the eradication of malaria, the construction of hospitals, aqueducts, a power plant to provide Rhodes' capital with electric lighting and the establishment of the Dodecanese Cadastre. The main castle of the Knights of St. John was also rebuilt. The concrete-dominated architectural style blended in with the islands' picturesque scenery (and also reminded the inhabitants of Italian rule), but has consequently been largely demolished or remodeled, apart from the famous example of
Dodecanese territories, occupied all the present-day Dodecanese except for Kastellorizo. After the end of the war according to the Treaty of Ouchy, Italy maintained the occupation of the islands as guarantee for the execution of the treaty. The occupation continued after Italy declared war on the Ottoman Empire (21 August 1915) during the First World War. During the war, the islands became an important naval base for Britain and France; Italy was allied with both nations during World War I. The Dodecanese were used as a staging area for numerous campaigns, most famously the one at Gallipoli. Some of the smaller