This is probably the weirdest woodland mansion you will ever see in Minecraft. The coordinates of the mansion are -1200 500, not too far away from the spawn point, and it's worth seeing it with your own eyes.
The mansion is entirely covered by the landscape with soil and trees hanging all over it. There is also a naturally generated tunnel in the soil that allows you to walk around the roof. Go ahead and check it out, because you'll never experience anything like this again!