The museum is built with titanium panels, glass curtain walls and limestones, and it has 33,000 pieces of titanium half a millimeter thick, each with a different shape suited to its location. As these parts are so thin, they have to fit perfectly to the curves. The glass takes a special treatment to let in the sun’s light, but not its heat.
The initial color is close to silver, but it seems that the color has changed little by the weather, the sunlight and the surrounding environment. The titanium panels that surround the exterior of the Guggenheim are thin and smooth. The bend wall was further emphasized by the titanium shell. 33,000 pieces of titanium cover the museum, creating a time-lapse fantasy with different feelings depending on the weather and time.
After undergoing modifications making a model of a building based on sketches, they implemented it using the 3D design program, CATIA and BOCAD, to solve the curved wall. He also used the design technique of edge computer to change poetic forms into reality. “The resulting architecture is sculptural and expressionistic, with spaces unlike any others for the presentation of art.” (Guggenheim-bilbao-corp.eus, 2018)
One of the features of this museum is that it has tuned the architectural space to installations from the beginning of the design.
The building is made up of three materials and spaces, giving the impression of a mass of rock as a whole. The traditional Spanish stone vertical side is a support facility, and the curved surface that is brilliant with titanium, which is a new material, is an exhibition space, and the part opened by glass corresponds to a public space where the visitors move. The other feature is the use of materials and the combination of layers that cannot be distinguished and the introduction of natural light through architectural devices.