Grodno Castle (formerly Kynsburg) is a castle located in the southern parts of the Wałbrzych Mountains, on the Choina Mountain (450 metres), standing to the left of the river Bystryca. The valley of this river, formerly known as the Silesian Valley, creates a natural boundary between the Owl Mountains and to the west of it the Wałbrzych Mountains. The castle is located in Zagórze Śląskie (11 km east of Wałbrzych), Lower Silesian Voivodeship in Poland.
The picturesque location of the castle is exacerbated by the barraged Lubachowskie Lake in the foothills of the mountain.
According to tradition the castle was built in 1193, by Duke Boleslaw I the Tall. The castle, together with a network of fortresses was used as a defense line between the Duchy of Jawor and the Kingdom of Bohemia. In the sixteenth century Grodno Castle was expanded by a gatehouse, on which there is precious sgraffito, and a sundial clock from 1716. The castle was devastated in battles against the Swedes during the Thirty Years' War, slowly falling into ruins. In the nineteenth century the tower had collapsed. The last owner of Grodno, was the Zedlits family, which had continued renovation works and strengthened the castle
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.