The first known owner of Koberg was knight Erik Nipertz in the 15th century. Later it has been owned for example by royal Vasa and Leijonhufvud (Lewenhaupt) families. The oldest eastern part of the castle dates from the mid-1400s, the middle part from 1620s and the western part from the late 1700s. The other estate buildings were built in Neo-Romantic style in 1900-1904. Today Koberg castle is the residence of Princess Désirée, Baroness Silfverschiöld and her husband Baron Nicklas Silfverschiöld.
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.