The structure, which will be known as 'The Bathtub', will be the largest composite building in the world.
The construction will be seamless, smooth and white - alluding to its nickname. It will appear as if it is floating, and will cover an area of approximately 3000 sq metres. The original building (built in 1895) will remain adjacent to the new construction.
"The construction consists of an inner skin and outer skin of a composite laminate of resin, strengthened by Twaron [aramid fibre] and Tenax [carbon] fibers." The fibres were donated to the museum by the Japanese manufacturer, Teijin, and were chosen because of their minimal thermal expansion properties.
It will be interesting to see the finished product!