Dohna Defensive Tower on the shores of Lake Verkhneye is named after Prussian Field Marshall Friedrich Emil Graf zu Dohna-Schlobitten. The Tower was the part of the second defensive ring, whose construction had been supervised by Friedrich zu Dohna-Schlobitten. Everything here was arranged in such a way that the structure could survive the hardest times – there was heating, ventilation, and a system of cellars with food stocks. Indeed, the war did not damage the buildings at all – the garrison in the fortification had to surrender only because the whole city was already controlled by Soviet troops. Today, the Amber Museum is located in the tower.