The King's Special Factory, as seen on the top screen. It can build a ballista, catapult and a King's Dragon, but isn't building anything at the moment.
A Special Factory is a kind of building seen exclusively in LEGO Battles.
LEGO Battles[]
A special factory is used to build Special Units. They build all special units for Earth and the Aliens, and all special units for the Knights and Skeletons, exept the Transport Ships. The other kinds of Special Unit are built at a Shipyard. The name of this building varies by team builder. They can be called Special Factory (Knights), Cauldron (Skeletons) Vehicle Factory (Earth) or Creation Pit (Aliens).