Aracena Castle was erected in the 13th century, during the Islamic period, and was itself built on the site of an ancient Moorish castle. The walled enclosure was partitioned inside, with the tower of homage, or castle keep, defending the barrier that divided its interior. The population of Aracena settled around this structure, giving rise to the current urban landscape. During the late Middle and Modern Ages, Aracena continued growing from the Cerro del Castillo (castle hill) into the valley, first as unattached land dependent on Seville and later, in the seventeenth century, as a feudal estate under the jurisdiction of the Count-Duke of Olivares. Still later, it was under the Count of Altamira, who carried the title of Prince of Aracena.
The fortress consists of the alcazaba, or citadel, with its watch tower, cistern and walls; these are flanked by other towers, as well as a fence line that, in its interior, once accommodated medieval living quarters.
References:House of the Blackheads (Melngalvju nams) is a building situated in the old town of Riga. The original building was erected during the first third of the 14th century for the Brotherhood of Blackheads, a guild for unmarried German merchants in Riga. Major works were done in the years 1580 and 1886, adding most of the ornaments.
The structure was bombed to a ruin by the Germans June 28, 1941 and the remains demolished by the Soviets in 1948. The current reconstruction was erected from 1995 to 1999. Today the House of Blackheads serves as a museum and sometimes concert hall.