Designed by Ludwig von Aster as a mighty pentagonal structure with huge towers on 3 corners, the resemblance to a crown from above is no coincidence. Upon completion in 1849, the barracks became the home of the 1st East Prussian Grenadier Regiment and they are supposedly connected to the nearby Grolman Bastion by an underground tunnel. Alas, neither of these buildings are accessible to the public and good views from distance are few and far between.