High Ploy Scene
Used for pillar decoration -
http://www.blendswap.com/blends/view/74645
For Grass
http://www.blendswap.com/blends/view/68437
Particle system is set for grass just use any texture from this above file and use it at grass
Final render is here
http://cgcookie.com/blender/images/corridor-2/
All displacement is included in it,
so nice jobs!!