The detail and focus is really good. The composition suffers though (IMO) from too much sky and too little cityscape. All that sky doesn't add anything of interest to the image and as they say, if it doesn't add, then it detracts.
ah, la defense! isn't it one of the most fantastic buildings ever. and where, pray, is this wonderful view from? went there in march - and it was actually one of the best things of the trip - very lovely fnac and the missus loved sephora. anyway, i digress. gorgeous picture, very fitting of the challenge, probably the better of the skyline shots this week (clarity and detail is brilliant - i want to buy your camera and lens combo). tres bien! neuf!
Excellent post card photo! The only thing I would recommend is to try to get this shot again without any clouds in the photo (see the right side) and to maybe get more sky so it's more of a 1/3 shot. Great job though!!!