High Quality Content by WIKIPEDIA articles! The grounds of the Palais des Nations (seat of the United Nations Office at Geneva) contain many fine objects donated by Member States, private sponsors and artists. The Celestial Sphere (also known as the Armillary sphere) in the Ariana Park of the Palais des Nations is the best-known of these. The huge - over four meter diameter - Celestial Sphere is the chef d`oeuvre of the American sculptor Paul Manship (1885–1966). It was donated in 1939 by the Woodrow Wilson Foundation to what was then the League of Nations building. Known also as the Woodrow Wilson Memorial Sphere of the Palais des Nations it is today a symbol of Geneva International and of Geneva as the centre of dialogue and peace.