Forsmark Manor was built between 1767-1774 to the site of the ironworks established in the late 1500s. The Ironworks was burned down by Russians army during the Great Northern War (1719). Samuel af Ugglas bought Forsmark in 1782 and it belonged to his family near two centuries. Today the manor is owned by Forsmark Power Group.
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.