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.
Hope you enjoy it.