Heres a riddle:

What’s the phone number of the office from where this picture was snapped?

NOT the building in the picture…but where the  photo was taken from.

Fast Answer: the Google offices in the Warsaw Financial Center at Emilii Plater 53, Warsaw, Poland.  The phone number is +48 22 207 19 00 and this photo is taken from the 10^th floor.

How he found the answer, posted by Daniel M. Russell and in a separate post,  His Google search tips, from a speech.