The CaixaForum is a museum, cultural centre and conference centre in the centre of Madrid. Herzog & De Meuron were responsible for the remodelling of the listed building from 1901.

The basic shape of the SPIN® floor elements is the triangle. The crystalline shape continues as the main motif in the plaza, the main entrance, the lobby and the staircase, which is also clad with SPIN® Plan panels. Each triangle from Hoba Steel is unique; the size of the triangles is up to 1.50m x 3.0m.

The reflection of the fluorescent tubes creates a three-dimensional light architecture on the framework of triangular large-format tiles from Hoba Steel. This continues the motif of the moving surface and the dynamics of the room.