Came across an article on "Le pied carré"--a Quebec-based architecture and building website--about the previously (& very briefly) discussed Louvre Pyramid:
"20 years ago the Pyramid of François Mitterand saw the light of day from within a swirl of controversy. Today, far from being polemical, it has become one of the unmistakable symbols of the museum aside the "Mona Lisa" and the "Winged Victory of Samothrace". The glass construction nevertheless continues to arouse passions and fantasies about, among other things, diabolical numbers, "princely whims" and the Freemasonic triangle. Oh, the mysteries of the pyramids!"
The article goes on to discuss the controversies surrounding the pyramid, the multiplication of esoteric interpretations and the long history of the "princely whims" of French Presidents and their pet architectural projects, "in the tradition of the builder kings...."
Funny article if you can read French. We'll try to translate it soon for your edification.