My Texture changes as you move closer why is this?

So I have a 3D maze and a dungeon style level. I made a texture to look like a cell so as to save on Polly’s. When I move towards my wall with the texture the picture changes. Note images one shows texture when further away the other when close up then the other image is of the original texture. Why is Unity doing this is there a work around?

I don’t really see any difference, but maybe try turning off mip maps on your texture.