From early on, this was my main single player world. This is the one that I start building on and then suddenly it is 6 hours later and I am like, "whoa... time travel".
Everything built was done on Survival mode with no editors or mods of any kind. Just good old fashioned gathering and building. But when monuments were added, they screwed up the terrain somewhat. Suddenly I had shear cliffs shaped like boxes, and monuments spawning in the middle of mountains or swamps. I thought it was cool at first, but now I think it sucks. Still... with all of the time I have put in here, I can't bring my self to start fresh.
Also, despite this being the one I have maintained the most... I have never been to The End in it. Strange huh?
So enjoy it. See if you can find the screenshot location. And always follow the torches in the Nether. :D
This is the world I have been working on since launch. Now that it is updated for 1.8 there are a couple of strange anomalies. You will find at -352, y, 256 an Ocean Monument that spawned in a swamp area. Also, head to 67, y, 370 to start with. This is my main house and from there, you can explore many interesting things. See if you can find the world screenshot.
All of this map was done on Survival Mode with NO editors or mods. That includes the village near the structure in the screenshot. All legit.