When strolling along the almost fully preserved approx. 2.3 km long town wall with its magnificent town gates, the houses that are built into the wall and the prisoners’ tower, you will sense a hint of mediaeval romanticism. The protective walls today surround the town like a green belt. With its monumental east gable, The Marienkirche [St Mary’s Church] hall church, originally a church with a nave and two aisles, ranks among the most impressive witnesses of the era of North German brick Gothic architecture. After almost complete destruction, the church today houses an architecturally attractive concert hall.