Maybe you will find more information here: http://commons.wikimedia.org/wiki/Commons:Freedom_of_panorama#European_Union


Scroll down and you will find all the countries listed.


Generally speaking European laws are strict. If you are doing a "setup" with lights etc. you need to contact the police for permission. Normally it is easy to get permission. Even street photography is regulated. If you want to be on the safe side, send an email to the American Embassy in the country you are going to visit.