A bit hard to find (one must weave through three or four courtyards and children's playgrounds before finding it, which is barely marked except by two black upright triangular canopies over the bunker doors), it was the headquarters of the local German command during the 1945 battle. A museum of the city's German past (which lasted 689 years) and Soviet "liberation" of the city, including several interesting dioramas of events during the days of the battle.