This one has 4 entrances, with no doors. No furniture inside as always. I tried to build the stairs, altough they look horrible. To make the roof, floor, stairs and the pillars you will need to use Biomes O' Plenty. I do not own this mod, but it's perfect for such building. If you'll search on google images for japanese castles you will see that they have very colored roofes (black, brown, blue, yellow etc) so the variety of the wood in this mod helps you build more nice buildings. The building is made of ebony wood, fir wood, and white wool, so 2 components of 3 will come from the mod. All being said, enjoy!