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
Italian Islands of the Aegean autonomy. Due to the Greek embroilment and defeat in the Greco-Turkish War of 1919–22, these agreements were never implemented. Kastellorizo was temporarily occupied by France in 1915 and came under Italian control in 1921. The Dodecanese islands were formally annexed by Fascist Italy, as the "Possedimenti Italiani dell'Egeo" in 1923. Italian interest in the Dodecanese was rooted in strategic purposes, and the islands were intended to further the Empire's long range imperial policy. The islands of Leros and Patmos were used as bases for the Royal Italian Navy. Starting in 1923, civil governors replaced the military commanders. The Italian politics