49 Avenue de l'Opéra, Paris, France.
Another entry for #architecturalphotography contest going on Steemit on Wednesdays that is kindly hosted by , so go ahead and check his blog out for more information about that.
For some reason I thought this was Boulevard des Capucines, but I looked it up and apparently it isn't? Weird. Anyways, these buildings are just across the street from Opera House in Paris.