The Middle Courtyard (also known as the Transfiguration Courtyard) is one of the cloisters in the inner part of Hogwarts Castle. This courtyard has grass in the open area, in which a big tree has grown over the centuries. There is one massive iron Armillary Sphere that stands in the centre of the courtyard. The Transfiguration department was located somewhere near here as well as Classroom 1B.