When LEGO revived the Harry Potter theme in 2018, it released the Great Hall set. This was the first of a series of modular Hogwarts sets, which can be combined into a large Hogwarts castle. Since they have added additional modules, allowing fans to build an impressive castle. For some reason, I have reviewed all the other modules but the Great Hall set itself. It is time to correct this - in particular as this set is expected to be retired mid 2021...