I love this question, back when I was a noob in 1.3.1, It was the second world I made after creating thousands of iron golems, I was doing half survival half creative and I made a VERY nice log cabin, nothing special, but nice, then I blew that up and made a new one, this one had a LARGE living room to the left were some chairs and a door to the trophy room, which were display cases filled with saplings, flowers etc. But, the first real thing, that I still have the schematic memorized, is When I made my 4 story tower, in my first survival world. First room was empty, second room was storage/crafting. 3rd is where I kept the enchanting table. the fourth was my room, where I kept the valuable treasures, hung trophies on the wall, and could look out the windows for miles in my endless snow world, you know, the Christmas easter egg or something. I'm proud of that tower's design, I make it everytime I get on a server, usually at the end of the world if they have the plugin, once it was 6 story, it had a basement that was a farm, and below that was a dungeon I repurposed.
