Dodecanese relative quiet and prosperity. In 408 BC, the three cities of Rhodes had united to form one state, which built a new capital on the northern end of the island, also named "Rhodes"; this united Rhodes was to dominate the region for the coming millennia. Other islands in the Dodecanese also developed into significant economic and cultural centers; most notably, Kos served as the site of the school of medicine founded by Hippocrates. However, the Peloponnesian War had so weakened the entire Greek civilization's military strength that it lay open to invasion. In 357 BC, the islands were conquered by
Kastellorizo spread to an adjacent ammunition dump, thereby destroying half of the homes on the island. Kastellorizo was assigned to Greece with the Paris Peace Treaties, 1947. In May 1945 it was still under British administration, but on September 15, 1947 effectively came under Greek administration. The island formally joined the Greek State on 7 March 1948 together with the other Dodecanese islands. The island has become more popular in recent years, among tourists looking for an isolated place in the Dodecanese, thanks also to the 1991 Oscar-winning movie "Mediterraneo", by Gabriele Salvatores, which is set on the island. Kastellórizo was