This is presently at the top of Reddit, so apologies if you've already seen it, but it's incredible enough to be worth the reshare: YouTube's halnicholas has used the wondrous sandbox of Minecraft to create a 1:1 scale model of Star Trek: The Next Generation's Enterprise-D. Keeping in mind that every block in Minecraft has dimensions of 1m^3:
The original Enterprise is 642.5 Meters x 467.0 Meters x 137.5 Meters. This is about 3m per deck. Sadly, with the 1m deck you have to walk on, that only leaves 2m left over for hallway space. As your character is only 1.7m tall, you will be bumping your head around a lot. I decided to make the ship 22% bigger, so I could have 4 m per deck. That puts the final size @ 785m x 570m x 168m. I made my "pit" 800x600x180 to fit all 42 decks and almost made a critical error. Even though there are 42 decks on the enterprise, the 2nd deck is split into two half-decks, making actually 43. I made the pit bigger than she ship so I could have a little wiggle room and just missed making it too shallow. In my testing, the halls can get a little cramped. The current decks are just a guideline and framework. They don't call it "Creative Mode" for nothing.
The halls are going to be sand-obsidian-sand (To give that light brown look with the black touch panel in the center) I'd show a demo, but Minecraft is down. I would like to mod my server so that sand doesn't fall. That would bee cool. I also don't know how to fly yet, will be making it much easier to work on the ship.
There's still work to be done, though: For one, this ship wouldn't fit in Minecraft
Alpha (!) and is currently hosted on a creative server, so Alpha would have to up its maximum game depth to allow it into the wild; for another, halnicholas needs to "model and import the warp nacelles, just so I have the framework there" and cut out some of the Adminium [bedrock]. Last but not least: An anti-griefing policy to keep this remarkable work from turning into rubble.
(via Reddit; h/t RPS)