Please find below a list of shelters where you can adopt a cat:

Belgium

List of shelters: http://www.chien-admis.be/pages/mes-pages/refuges-chenils-et-societe-protectrice-des-animaux-spa-srpa.html

France

List of "official" public shelters: http://www.30millionsdamis.fr/jagis/jadopte-un-animal/

List of rescue organisations that offer cats for adoption: http://www.secondechance.org/refuge/list?espece%5B%5D=1&Region=&Departement=&commit=Rechercher+%21

Germany

List of public and private shelters (sorted by species) http://www.tierheim-deutschland.de/

Italy

List of public and private shelters http://www.prontofido.net/index.asp?action=05

Romania

List of public and private shelters: List of Romanian Shelters