From 1940 to 1944, the Nazis used the castle as a convalescent home for artists during the occupation of Luxembourg. In 1952, the Luxembourg army used it for one of its battalions until 1968. Since then, the site has acted as the seat of Luxembourg's National Communications centre, as well as a conference centre for use during State visits, with a press room and cabins for interpreters. Additional renovation work was completed in 2004. The Luxembourg government used the site for European Council summits during its 1991 and 1997 presidencies of the Council of Ministers.