Here's my base, as best as I can get it given GOG's file size limit. There's a main "castle" with a barrack, ballroom (filled with chests, heh), armoury, dining room/kitchen, infirmary, therapist (i.e., the Guide), library, and royal tinkerer, mechanic, and wizard. The big empty box at the top was going to be a throne room, but I never finished it. I haven't decided what to do with the right tower yet. Please note that this is from a really old world, pre-1.1 (before Hard Mode was added; everything that's in the Armoury was all that was in the game when I built it). They changed many of the background wall graphics since it was built, so some of the rooms look terrible now (especially my room, the crafting room, and the goblin's room). Heck, the dungeon blocks changed too, and I think those look bad as the walls now too (originally changed to them because the jesters could destroy other block types during blood moons).
Below the castle is the storage basement, with my spawning room, a crafting room, farms, and an obsidian generator. To the lower right is the top of my unfinished Hellevator (I planned to line the whole thing with demonite bricks (pretty glow!) and give it a background wall to keep monsters out). I left some room to extend the storage, but haven't done that yet. Honestly, with the way I sort things, and with how much has been added to the game, I don't think there's enough room anyway. I'll probably have to just build a whole new storage building. The glowing mushroom farm is so big because I play a mage and needed them to make mana potions. Now I have the Wizard, so I just buy better ones from him.
To the right of the castle is an apartment building, another guard tower, and a tree for the Dryad. Again, built a long time ago, so there were no living trees or leaf placing wands and you had to be a bit more creative. The tree is shaped to be similar to the style of the Terraria trees, rather than realistic. It's hard to tell even in game, but I built roots for it as well and put blinkroot down there to light them up, but... yeah, it's really hard to see. It doesn't help that the wood and dirt are so close in color.
There's a home for the Truffle and the Witch Doctor to the left of the castle, but I forgot to take pics of them.
And, just for the hell of it, a picture of my map showing the Hellevator and the layout of the town a bit better. The bit between the castle and apartment building is my boss/invasion fighting platform. The stretch to the right of the tree (and where the tree was placed) is my tree farm, and was were I fought the first boss (the torches do double duty: helping me space out my acorns, and seeing the boss when it goes underground).
InkPanther: Here are my two screengrabs. One with crammed NPC/warehouse basic building (my FPS drop like flies in there) and another one is a building I made for... well... just for the sake of building it.
I really like that other building that's just for the sake of it. It has the kind of creativity and use of materials that I couldn't even dream of.