The last major rebuilding of the city wall occurred in the 1350s, when the wall was strengthened and its height increased by an additional 3-to-4-metre (9.8 to 13.1 ft).[6] Its defenses were also augmented with approximately twenty new towers attached to the east part of the wall. When King Valdemar IV of Denmark captured the town in 1361, he ordered a part of the wall to be torn down as a symbolic act. It was done to emblematize the town's subjugation, a practice going back to classical antiquity. The razed part of the wall was rebuilt in 1363.[11] The corner tower known as the Silverhättan (the Silver Cap) probably dates from the period in which Visby belonged to the Teutonic Knights (1398?1408).[12] It is possible that two lesser towers facing the sea, also date from this time. The last great attack on Visby took place in 1525, when troops from Lübeck assaulted the town. The Lübeckerbräschen (the Lübeck Breach) is traditionally assumed to be the visible remains of the troops' breach into the town, but is more likely due to a later collapse of this part of the wall. However, it is in the part of the wall where the troops from Lübeck most probably damaged the town's defenses.[13]
