Final frame

MKM Museum

A sculptural staircase, cast in situ from terracotta-pigmented concrete, connects the five levels of Herzog & de Meuron’s extension to the MKM Museum Küppersmühle in Duisburg, Germany.

The Swiss architects created the original gallery from a 19th-century grain mill – a project that ran in parallel to the Tate Modern and completed in 1999. The extension adds 2,500m² of white cube exhibition space. The sinuous stairwell acts as a deliberate contrast, and echoes the red-concrete stair tower created for the original museum.

Photo Simon Menges