 It was occasionally used as a residence by the Presidents of the Third Republic, and to welcome state guests including King Alexander I of Serbia (1891), King George I of Greece (1892) Leopold II of Belgium (1895) and King Alphonse XIII of Spain (1913).It also received a visit by the last survivor of its royal residents, the Empress Eugenie, on 26 June 1920.The façades the major buildings received their first protection by classification as historic monuments on 20 August 1913.