The Castle of Klaipėda (then known as Memelburg) was built in the middle of the 13^th century by the Teutonic Knights at the mouth of the River Dangė. This marked the beginning pf centuries-long fights between Lithuanians and Germans. The fact that the castle was significant for the Teutonic order but burdensome for the Grand Duchy of Lithuania, meant that the history of the castle and the adjacent town was developing in a dynamic way. Consistent attacks and fires, and the consequent rebuilding and modernisation were the usual elements of life in Klaipėda. Gradually, the castle lost its military function and began to disintegrate. The last bricks were taken from castle structures to be incorporated into the buildings of the Old Town in the second half of the 19^th century.

Currently, the Castle Museum hosts four expositions. Two are housed in the authentic 16th-18th century posterns of princes Friedrich (Exhibition 3) and Karl (Exhibition 2). The most recent and impressive displays are exhibited in the restored curtain walls of the Klaipėda castle.

The tragedy of the Klaipėda Region during World War II is illustrated in the state-of-the-art exposition MUSEUM 39/45 (Exhibition 4). Pro-Lithuanian and pro-German feelings in pre-war Klaipėda. A city in ruins after the air raids from late 1944 to January 1945. Almost all the local population had left or been evacuated by 1945. Debris clearance was followed by developing a new kind of a Soviet identity… All that is a mixture of facts, and painful memories taking the visitor right into the middle of the war where the most terrible facts raise emotions.

In 2021 August 1 the archeological exposition “Kurtina” (Exhibition 1) was opened in the restored castle’s northern curtainwall. With the help of ~ 5 thousand finds and the latest technologies in 800 sq. m exhibition spaces reconstruction of the old history of Klaipėda from the 13^th to the 18^th century was created. Lovers of modern solutions have an impressive abundance: as many as 12 interactive computer terminals, 11 projectors with probably the largest projection in Lithuania (15×6 m!), 8 sound zones, various holograms, LED screens.