The Stiftskirche is Landau's most prominent church and one of the most interesting buildings in the old town. Originally a Gothic collegiate church built from the 14th century, it has undergone considerable alterations over the centuries of French and German occupation. The most unusual feature is the Simultankirche arrangement: since 1708, the building has been divided between Catholic and Protestant congregations, who use different sections of the same church.
This cohabitation was not voluntary — it was imposed by the French authorities — but it has persisted for over three centuries and become part of the church's identity. The tower is a Landau landmark, visible from the surrounding wine country. The interior contains Gothic elements, Baroque additions, and the simple partition wall that marks the boundary between the two congregations' spaces.