Canon Meinard of the Augustinian Order of Segeberg monastery in Holstein started to build a church in Ikskile in 1184. Until the foundation of Riga in 1201 the church was the seat of the Bishop of Livonia, thoroughly rebuilt from 1879 - 1881 and destroyed in 1916.
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.