<<< Just to clarify few thinks. You have the right to take pictures of
anybody or any building but you need permission for exhibition or any
commercial use. I have never seen any photographer in the street taking
photos of buildings even with a tripod being in trouble. For people it is
different as any where in the world you should ask if they agree to take
some photo it is always more friendly.
I have taken hundreds of photos in Paris without any trouble ( do not
try photos in hot district with prostitutes)