Schmaltzturm (Lard Tower) is the oldest of the surviving parts of the first city fortifications. It was built in the XIII century as a watchtower. It has survived up to now with a bell tower, clock and motley tiles. A trace of cannonball - a reminder of the period of the Napoleonic wars-can be seen on its facade.
Its name comes from the fact that in the Middle Ages an impromptu market was established in its passage, on which bacon was traded. Due to the coolness and the shadow of the walls, the fat did not spoil here even on the hottest days. Once a month the tower opens to the public.