The Bastion of the Vilnius Defence Wall is a must-visit museum in Vilnius if you enjoy history and architecture. The musuem explores the military history of the region, showcasing artillery weapons from the 16th to 18th centuries. You can explore a tower, horseshoe-shaped defence wall and a connecting tunnel while learning stories about the defense of Vilnius. Tickets cost €6 for adults and €3 for students and pensioners.