The Château du Landsberg in Heiligenstein includes a Zwinger with two sets of defensive walls. The central part of the castle was built in the late 12th century, and the newer outer castle added onto at the start of the 13th century by Conrad de Landsberg to provide defence for the abbeys of Mont Sainte-Odile, Niedermunster, Truttenhausen and Andlau. More recent additions were made in the 15th century. Herrad of Landsberg was born here around 1130. The castle is privately owned.
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The first written record of church in Danmark locality date back to the year 1291. Close to the church are several stones with a Christian text and cross inscribed. The oldest parts of the present red-brick church are from the 1300s. In the late 1400s the church was enlarged to the appearance it has today. The church has been modified both internally and externally several times, among other things after the fires in 1699 and 1889. There are lot of well-preserved mural paintings in the walls.