Museum of the Occupation of Latvia 1940-1991 (Latvijas okupācijas muzejs) is an historic educational institution. It was established in 1993 to exhibit artifacts, archive documents, and educate the public about the 51-year period in the 20th century when Latvia was successively occupied by the USSR in 1940, then by Nazi Germany in 1941, and then again by the USSR in 1944.
The museum's stated mission is to show what happened in Latvia, its land and people under two occupying totalitarian regimes from 1940 to 1991, remind the world of the crimes committed by foreign powers against the state and people of Latvia and remember the victims of the occupation: those who perished, were persecuted, forcefully deported or fled the terror of the occupation regimes.
The building of the museum was built already in 1971 to celebrate Lenin's 100th birthday and up until 1991 it served as the Museum of Red Latvian Riflemen.
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.