Large rectangular enclosures (literally, 'citadels') found in Mesoamerica and thought to have been the dwellings of the ruling classes and their retainers. The enclosures, surrounded by tapering adobe walls, contained courts, storerooms, administrative structures, and platform burials. Some may have been the palaces of the Chimu kings; the number of recognizable ciudadelas agrees with the number (10) of known Chimú rulers. Ciudadelas have been found in the ancient Andean city of Chan Chan and it has even been suggested that they were the palaces of successive rulers, maintained by their descendants in the way that those of deceased Inca were maintained in Cuzco.