La Pyramide Inversée (The Inverted Pyramid) is a skylight constructed in an underground shopping mall in front of the Louvre Museum in France. It may be thought of as a smaller sibling of the more famous Louvre Pyramid proper, yet turned "upside down": its upturned base is easily overlooked from outside. It is famous for being the resting place of the Holy Grail in The Da Vinci Code.
The pyramid marks the intersection of two main walkways and orients visitors towards the museum entrance. Tensioned against a 30-ton, 13.3-meter square steel caisson frame, the inverted pyramidal shape in laminated glass points downward towards the floor. The tip of the pyramid is suspended 1.4 meters (a little more than 4.5 feet) above floor level. Individual glass panes in the pyramid, 30 mm thick, are connected by stainless-steel crosses 381 mm in length. After dark, the structure is illuminated by a frieze of spotlights.
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