On April 29th Angela Merkel, the current German chancellor, visited ATLAS/CERN. The picture shows Rolf Heuer (the designated Director-General), Robert Aymar (the current Director-General), who knows, Angela Merkel and Peter Jenny (the ATLAS spokesman) in the ATLAS Control Room.
Since Mrs. Merkel is a graduated physicist it was actually about time for her to visit.
Especially since the public underground access is closing next week. From than on only a few people are allowed to go down and only after iris scan based authentification (cool but unfortunately needed due to French laws applying at the LHC).

Theres also an entry in Mrs. Merkel’s travelbook, see it here (but only in German, so far).