[115] Realistic Seamless Textures

This is a bundle of all the types of textures that one would likely need in most outdoor environments. There are some unique textures sprinkled in, but most images are what you'd expect to find in either a natural or man-made outdoor setting. 

Materials are simply generated from the images you see. May add uv-maps, height maps, etc in the future. You can, of course, easily adjust the color, shininess, and tiling of each material to your liking in Unity.