The area is slightly elevated due to filling in of the mine.[11] To make the building blend into the surrounding area, the architects designed a string of five low-profile structures; the central one is square with glass walls and the others are rectangular with polished, aluminum facades that gave a blurry reflection of the surroundings.[12] Altogether, the museum is 360 m (1,180 ft) long and contains 28,000 m2 (300,000 sq ft) of exhibition space.[3]