Fort Monostor was built between 1850 and 1871. After World War II the Soviets built the biggest ammunition storage in the Fortress of Monostor. Thousands of wagons of ammunition were forwarded from the strictly guarded objects. One of a series of forts in the area, Monostor is open to the public as a museum.
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.