The Lord Of The Rings
The Shire

Warhammer 4oK
Imperial city/defenses

Tyranids

Space Orks

Warhammer Fantasy

Lizardmen
Wilderness

Inspiration     

  Inspiration for scenery can come from almost any where. A few places to look is the CODEX books for Warhammer 40,000, the Warhammer armies books,  White Dwarf magazine, and GamesWorkshop.com

   Another good place to look is the How To Make Wargames Terrain book that Games Workshop has made. (I only have the old one) This book has many cool pictures of scenery like Ork houses, rivers, crashed ships and so forth.