Birzai Castle

First built by Duke Kristupas Radvila in the late 16th century, Biržai Castle was largely restored in the 1980s, having been twice destroyed. Its huge, white-washed bastions striking skywards from man-made Lake Širvėnait was the seat of the Dukes of Biržai, and found itself in the front line in two wars with Sweden. The main castle and arsenal house fairly dry exhibitions of local wildlife, ethnography, military history, and the story of the castle, the Duchy and Radvilas family.

Prepare your cameras for visiting picturesque 32 meters tall canoe-shaped Kirkilai Tower with a viewpoint to Kirkilai Lakes opened in 2015.