Age Fotostock/Superstock

A fortress on the Aegean coast, the Crusader castle overlooks the harbor of the seaside city of Bodrum, now a popular summer resort. The castle was built by the Knights of St. John of Malta, who, in order to refortify the building in the 15th century, used remains from the Mausoleum. Slabs of green volcanic stone from the Mausoleum’s interior were used for the walls. The Crusaders burnt the marble facing slabs and small pieces of marble sculpture to make lime mortar. The castle now houses the Bodrum Museum of Underwater Archaeology.