7. The Planetarium Room
Okay, this one’s a bit extra, but stick with me. Inside a stone building, I made a round room with a domed ceiling covered in glowstone dots — stars, basically. I used different colours of stained glass over the glowstone to make constellations, and there’s a big orrery in the middle made from item frames and coloured blocks. Add bookshelves, a jukebox, and a couple of armchairs, and you’ve got the fanciest room in your world.