Paris 4

Centre Pompidou.  I don't expect cohesion in a general collection, and this is a general collection of modern art.  Yet the theme is there, and it is illusion.  Spotlights in a pink fog form a pyramid.  Threads in multiple planes form shapes that dissolve.  A lightbox projects lettered shadows.  A magnetized canvas holds an iron rod depending from a string in thrall.  And, above all, the building itself, its decorous exterior actually service structures.