ForĂȘt d'Allain, Lorraine, France 30 x 14 x 14 m. (98 ft. 5 1/10 in. x 45 ft. 11 2/10 in. x 45 ft. 11 2/10 in.) Oak, hornbeam, whitebeam, sycamore, maple, stainless steel, lacquer, plaster 2013