This picture belongs to Pussy Cat (Pussy Catalunya, the creator) and has been taken from the http://skyscrapercity.com/archive/index.php/t-130377.html forum, Pussy Cat allows people to use his photographs only if he is given credit.
This file has been (or is hereby) released into the public domain by its author, 'Pussy Cat'. This applies worldwide.
In case this is not legally possible: Pussy Cat grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.