The museum and library are contained in a building that uses Arab decorative patterns on one side. The building is located on the banks of the Seine and is next to a University. The end of the building facing the street. The side facing the Seine reflects Notre Dame. Which you can't see that well because to take a photo of that side requires standing in the middle of a road and risking life and limb.
Entry is via an narrow defile opening onto a courtyard.
Entry to courtyard. These windows are electronically controlled so as to open and close according to the amount of sunlight . The geometric design of the windows. Close-up of the windows.