The history of Kyminkartano estate starts around 1350, when Earl Erengisle Suneson acquired some farms around the branches of Kymijoki river. He donated the estate in 1370 to Seneschal Bo Jonsson Grip, who was one of the most powerful noblemen of the kingdom. Late Grip donated Kyminkartano to Vadstena Abbey.
King Gustav Vasa visited in Kyminkartano in 1555 and acquired it to the Crown. After Russia had conquered the area in the 18th century, the government redeemed most of the estate's property. The new main building was built in the 1790s and owned by Wrangel, Clayhills, Bruun and Naht families. Today Kyminkartano is privately owned and not 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.