A few days ago, on the r/minecraft subreddit, redditor Spelunkding shared pictures of what they called a "chunk house". Since then, chunk houses have been popping up all over the place.
In case you're unaware, chunks in Minecraft are the building blocks of the world. Each world's surface is composed of an infinite number of chunks, and one chunk equates to an area of 16*16 blocks.
Above, you can see how the game identifies chunks — each one gets its own number, basically. In the example, we're standing on one corner of the -3rd, -71st chunk in a fresh map.
So, a chunk house has you build on a 16-by-16 block plot of land. You can try to follow actual in-game chunk edges as you build, but really, any 16*16 block-sized land will do. As long as you don't go outside this boundary, of course.
Now, 16*16 blocks might seem limiting, but when you actually start building, you'll realise just how much space you actually have to work with.
Quite a lot, as it turns out! Plenty of room for creativity.
And the community has indeed been coming up with wildly different chunk houses. Up top is brickpanzer's chunk house which, as you can see on the interior shot below, is a lot bigger than it looks.
And here's Spelunkding's original chunk house:
Timmystwin built a whole chunk fortress:
And Fireninja312 built a whole chunk village:
Here's a rather fancy one from Stygma:
And finally, tomatotrucks' more utilitarian, medieval-style chunk house:
There's a lot more over at r/minecraft, so take a look there if you want. And if you end up building your own chunk house, make sure to share it in the comments below!