It's a small house with a secret dungeon kinda thing.

I used tnt to blow the hole then made it 'smooth'? inside by covering the walls with Brick.

I'll be building my own version of the house but I thought I'd upload a 'template' for others to try and build one I guess.

It has a back entrance and stuff.

Enjoy - I'll take suggestions below!

UPDATE

I've added a mine kinda thing leading all the way down to bedrock with a water transport system. There's a little surprise at the bottom. Remember you need an iron pickaxe or better to mine it ! :)

=UPDATE=
I've added windows by request and made the wings 1 block longer on each side.

This world save is for my other project called 'Big Airplane' so when logging onto the world you have a path to chose either the airplane or house! you can check out my other project my clicking my profile

There's also been a brick staircase formed, kinda. It's for everyone that doesn't have a flying mod.