Bauselawke castle was first mentioned in 1371. The brick castle was surrounded by a stone wall. The church was mentioned first time in 1402 and 1513 it was merged with the castle. Since the Reformation in 1525 it was used as a Lutheran church until 1970s.
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.