The Great Refectory

The Great Refectory measures 27 metres long, 8.8 metres wide and 10 metres high. A longitudinal ridge rib connects the six bays of its star vault. Occupying an entire castle wing, the room was intended for formal gatherings, including Warmian regional assemblies and addresses by the bishop.

A Coronation of Mary scene from around 1380 survives on the wall. Other decoration dates from later periods: a window recess preserves a fifteenth-century image of Saint Paul and ornament bearing the arms of Bishop Antoni Jan Szembek from the early eighteenth century.

The sequence of bishops' coats of arms beneath the vault began under Jan Stefan Wydżga, who held office from 1659 to 1679. Further arms were added in 1930. The decoration was therefore not created at the same time as the Gothic hall; its successive layers record the castle's occupants across different centuries.

Since the 1980s, the room has displayed Gothic art from the Museum of Warmia and Mazury's collection. These religious works come from Warmia and former Teutonic Prussia. They are viewed in an interior whose own medieval murals remain part of the architecture, rather than objects transferred into display cases.