Link to photo gallery (Thanks, Siege!)
Reader comment: Mr Zounic says,
They are the work of Felice Varini ( ) • Some of them are visible in the "Société Générale" towers in La Défense, Paris. ( Link ) • More on this website and in this brochure ( PDF Link )
Reader comment: Enrique Bordes in Madrid says,
George Rousse (france 1947) has been working in that kind of images since the 80´s.
I don't know if the photos you link are his work, a fan of his or just an artistic coincidence.