Ghostwriter
Malbork is the largest castle in the world (surface area), and the largest brick building in Europe. It was built in Prussia by the Teutonic Knights, in a form of an Ordensburg fortress. The castle is a classic example of a medieval fortress and, on its completion in 1406, was the world’s largest brick castle.
The largest castle in the world, by surface area, is Malbork. It is also the largest brick castle in the world. It’s a fortress style.
Of course it would be a grand fortress given the fact that the Teutonic Knights built it.