Castillo de Gigonza site has been in existence since antiquity. The present castle is of Andalusian origin and almost square in shape, with two parts to its structure. The current appearance dates from the 13th and 14th centuries. A narrow and low door contains a lintel with two heavy imposts. The upper floor is vaulted and contains windows. The grounds contain a surrounding fence. The courtyard is accessed through a door with and arch, displaying a coat of arms of the Casa de Arcos.
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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.