Burg Pyrmont was built in the late 12th century by Kuno von Schönburg. It was first time mentioned in document dating from 1225. Waldbott Bassenheim family restored the castle in 1712, but it was partially demolished during the French occupation in the tide of 18th and 19th centuries. The last restoration was made in 1912. Today Pyrmont castle is open to the public.
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.