St. Radoneza Sergius Church was built from 1874 to 1877. The author of the building was Jānis Frīdrihs Baumanis (1834-1891) – the first educated architect of Latvia. The church was built from split boulders. Cornice, corners of the building and ledges were made of local bricks. There is Mangdenu family`s vault next to church (built in 1906).
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.