Migreurop, an association of individuals, NGOs and academics from different EU and North African countries, has published an updated version of the map on detention camps for foreigners in European and Mediterranean countries that it produced in July 2004.
The updated map is available as a PDF at the following addresses:
http://www.migreurop.org/IMG/pdf/carte-en05.pdf (English version)
http://www.migreurop.org/IMG/pdf/carte-fr05.pdf (French version)
Migreurop page concerning the policy of detaining migrants in Europe and beyond (fr):
http://www.migreurop.org/rubrique45.html