if you know any parisians going to rome before the end of this month, let them know that with the presentation of their "identity card" stating that they live in paris, they will be granted, free of charge entry into a rather nice list of roman museums.
and if you know any romans, let them know that the city of paris is returning the favor, but in reverse. romans can visit many museums in paris for free!
act now! this offer won't be around much longer!