I live in an ugly sim. A really ugly sim. Okay, so it's probably not very different from anywhere else on the mainland, but it's still ugly. My land is in a little parcel along the south edge of Harisine, and Harisine is ugly. If you don't believe me, go look for yourself. It wasn't ugly when I first bought the land, but nothing at all was there yet. Now it looks like something out of a zoning nightmare. On top of that, there's a 12 Monkey Casino in one tiny corner of Harisine that always has at least 20 people in it. I tried to sell my parcel, but couldn't get any takers unless I wanted to sell it at a loss . . . which I didn't.
Anyway, the point of all this is that I decided to hide the eyesore of Harisine from my parcel. I put up several walls outlining my property, and found a nice landscape to put on the inside surfaces of the walls. I had to tinker quite a bit with the repeats per face and offsets to make it look right, since I had to use several prims per wall. Here's what it looks like now from inside my land.
I put a transparent texture on all the outer surfaces. And I made the walls phantom, so anyone flying through wouldn't crash into a wall they couldn't see. Here's what it looks like from the middle of Harisine looking back towards my parcel:
See, I told you it was ugly.