The castle of Rhodes’s structure is rectangular in design and positioned around a central courtyard. The primary entryway to the central open courtyard is located on the south side. The Grand Master's Palace now serves as a museum as well as an exhibition space. The bottom level houses two permanent displays about the ancient city of Rhodes, whereas the first floor houses the rebuilt majestic halls of the Castle of Rhodes as well as the impressive Hellenistic floor mosaics from Kos that were relocated there during the Italian reconstruction to decorate the area.