Palace of the Grand Master of the Knights of Rhodes
Rodos Municipality, Greece · built 1320
The Palace of the Grand Master of the Knights of Rhodes, also known as the Kastello (from Castello, "castle"), is a medieval castle in the city of Rhodes, on the island of Rhodes in Greece. It is one of the few examples of Gothic architecture in Greece. The site was previously a citadel of the Knights Hospitaller that functioned as a palace, headquarters, and fortress.
Palace data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).