9Palace of the Grand Master of the Knights of Rhodes, Greece

This classic medieval castle towers above the island of Rhodes in the Aegean Sea. Originally built as a Byzantine citadel, it was reworked into its present Gothic form by the crusading Knights of St John when Rhodes served as the headquarters of their grand master.

During the brief Italian occupation of the Dodecanese Islands, Benito Mussolini used the castle as a holiday home. Its permanent archeological exhibitions feature relics from ancient Greece and the early Christian period.