Museum of the Occupation of Latvia is an historic educational institution located in Riga, Latvia. 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. More than 100 000 visitors come to the Museum every year. About two thirds are foreign visitors, including distinguuished state guests of Latvia. The Museum is maintened and administered by Occupation Museum Association, registered in Latvia as a non-profit public benefit organisation. Its main support comes from Latvians living abroad and in Latvia - both organisations and individuals - and the generous donations of Museum visitors. This support allows the Museum to conduct its activities without political pressures.