The Ninth Fort is a historical site located in Kaunas, Lithuania. Originally built in the late 19th century as part of the Kaunas Fortress, it served military purposes and was later used as a prison. The fort is notable for its role during World War II, particularly as a site of mass executions of Jewish people and other victims by the Nazis. Today, the Ninth Fort functions as a museum and memorial, dedicated to the memory of those who suffered and perished there. It aims to educate visitors about the atrocities of the Holocaust and the importance of tolerance and human rights.