既有的博物馆位于历史保护建筑“Landsberger Hof”中，在经历扩建之后成为了南威斯特法利亚文化论坛。一期工程对建造于1605年的老建筑进行了全面翻新，并重新设计了永久展览。二期工程在既有建筑旁增加了一栋新建筑，呈45度倾斜的场地一路延伸至鲁尔大街和鲁尔河。建筑的首层空间低于入口层约20米，使博物馆能够容纳该高度范围内的顶级临时展览。

▼博物馆外观，exterior view © Brigida González

The Sauerland-Museum, located in the historically listed „Landsberger Hof“, has been expanded to become Museum and Cultural Forum South Westphalia. To achieve this, the existing historical building from 1605 was extensively renovated in a first construction phase and the permanent exhibition was redesigned. Phase two comprised an extension building, located on the directly adjacent, 45-degree sloped lot which leads down to Ruhrstrasse and the Ruhr River. This new sculptural construction, whose ground floor lies nearly 20 meters below the entrance level of the prestigious existing building, now enables the museum to house top-level temporary exhibitions of interregional stature.

▼鸟瞰图，aerial view ©wa wettbewerbe aktuell

根据客户的要求，项目团队对2012年的竞赛获奖方案（既有建筑和新建筑通过地下层连接）进行了重新设计。新的方案为博物馆赋予了一个由北向南逐步下降的台阶式体量：从既有建筑的地下一层延伸至建筑主体所在的鲁尔大街。在通过白色的楼梯井不断下降的过程中，建筑的体量逐渐增大：从上层的起始展区到夹层的多功能厅，再到最后的大型主展厅。

▼剖面图，section © Bez + Kock Architekten

At the client’s request, the award-winning competition project of the year 2012, with its underground connection between the existing and new construction, had to be completely redesigned. The new design of the museum building is stepped like a grandstand from North to South in three stages: From the level of the first basement of the existing building down to the Ruhrstrasse, where the main building mass with the great exhibition hall is located. On the way down through the white stairwell to the Ruhrstrasse the volume increases itself storey-wise, from the upper level with the start of the exhibition to the mezzanine level multi purpose hall down to the grand exhibition hall.

▼逐步下降的台阶式体量，the new design of the museum building is stepped like a grandstand in three stages © Brigida González