Pyramide inversée

The Louvre Pyramide Inversée is a skylight constructed in the Carrousel du Louvre, 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 seen from outside.

The inverted pyramid marks the intersection of two main underground walkways beneath the Place du Carrousel and orients visitors towards the museum entrance under the Cour Napoléon. Tensioned against a 30-tonne , 13.3-metre square steel caisson frame, the inverted pyramidal shape in laminated glass points downward towards the floor. The glass of the pyramid itself is 10 millimetres thick, while the glass above the pyramid at courtyard level, which must be able to support the weight of pedestrians, is 30 millimetres thick. The tip of the pyramid is suspended 1.4 metres above floor level. Individual glass panes in the pyramid are connected by stainless-steel crosses 381 millimetres in length. After dark, the structure is illuminated by a frieze of spotlights.

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