Louvre Pyramid of . Its square base has sides of and a base surface area of . It consists of 603 rhombus-shaped and 70 triangular glass segments. The pyramid structure was engineered by Nicolet Chartrand Knoll Ltd. of Montreal (Pyramid Structure / Design Consultant) and Rice Francis Ritchie of Paris (Pyramid Structure / Construction Phase). The pyramid and the underground lobby beneath it were created because of a series of problems with the Louvre's original main entrance, which could no longer handle the enormous number of visitors on an everyday basis. Visitors entering through the pyramid descend into the spacious lobby then
Leeum, Samsung Museum of Art as well as the museum’s master plan. The main entrance into the lobby of Museum 1 is through Koolhaas’s glass structure. As they enter the museum, visitors follow along on a wooden ramp and pass under a pavilion, demarcating the threshold. He used pilotis which not only lighten the structure but also provide a view of the surrounding buildings and site. The skin of the three story outer building is composed of steel and glass. Inside, a mixing chamber was created between the glass wall and Black box and the placement of lighting, piloti and ramps. The Black concrete box