The Collaborative International Dictionary of English v.0.48:

Scenery \Scen"er*y\, n.
   1. Assemblage of scenes; the paintings and hangings
      representing the scenes of a play; the disposition and
      arrangement of the scenes in which the action of a play,
      poem, etc., is laid; representation of place of action or
      occurence.
      [1913 Webster]

   2. Sum of scenes or views; general aspect, as regards variety
      and beauty or the reverse, in a landscape; combination of
      natural views, as woods, hills, etc.
      [1913 Webster]

            Never need an American look beyond his own country
            for the sublime and beautiful of natural scenery.
                                                  --W. Irving.
      [1913 Webster]

WordNet (r) 3.0 (2006):

scenery
    n 1: the painted structures of a stage set that are intended to
         suggest a particular locale; "they worked all night
         painting the scenery" [syn: scenery, scene]
    2: the appearance of a place

Moby Thesaurus II by Grady Ward, 1.0:

113 Moby Thesaurus words for "scenery":
   act drop, agora, airscape, amphitheater, arena, asbestos,
   asbestos board, athletic field, auditorium, backdrop, background,
   batten, bear garden, border, bowl, boxing ring, bull ring, campus,
   canvas, circus, cityscape, cloth, cloudscape, cockpit, coliseum,
   colosseum, coulisse, counterweight, course, curtain, curtain board,
   cyclorama, decor, drop, drop curtain, field, fire curtain, flat,
   flipper, floor, forum, ground, gym, gymnasium, hall, hanging,
   hippodrome, landscape, lists, locale, lookout, marketplace, mat,
   milieu, mise-en-scene, open forum, outlook, palaestra, panorama,
   parade ground, perspective, pit, place, platform, precinct,
   prize ring, props, prospect, public square, purlieu, rag, range,
   ring, riverscape, scape, scene, scene of action, scenic view,
   screen, seascape, set, setting, side scene, sight, site, skyscape,
   sphere, squared circle, stadium, stage, stage screw, stage set,
   stage setting, sweep, tab, tableau, teaser, terrain, theater,
   tilting ground, tiltyard, tormentor, townscape, transformation,
   transformation scene, view, vista, walk, waterscape, wing, wingcut,
   woodcut, wrestling ring