I'm working on an Underground World.
It's not that big at the moment because I just began. :)

There are around 50 houses at the moment. Smaller and bigger ones.
I decorated every little house so you should look inside them. ;)
(The chests aren't empty, too.)

Additional Notes

Programs I've used so far:

-World Painter: To make the world with the caves.

-MC Edit: I only used this for little things like the ladders.

The rest is 100% build by hand in the creative mode. :)