The Castle of Charles V is located in the strategic area of Hondarribia, at its highest point. It still conserves the structure of a medieval fortress and its defensive appearance. It was built in the 10th century by King Sancho Abarca of Navarre, although it was subsequently reformed by Emperor Charles V. The building served as both a castle and a palace, both connected by an interior courtyard. The castle had a square floor plan with sturdy walls. Highlights of the main facade include the doorway, rather small in size and decorated with an arch framed by the characteristic Islamic moulding known as an alfiz, over which can be seen the imperial coat of arms with the two-headed eagle of Charles V. It has today been restored and converted into a Parador hotel.
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.