The King's hall was called the Great Hall before King Gustav II Adolphi visited the castle in the 1620s. With its cross-vaulted ceilings and whitewashed walls, the King's hall represents late medieval banqueting at best. The most spectacular parties were held in the hall, where people ate and drank as well as danced and socialised.

Ingeborg Åkesdaughter Tott was the head of Häme Castle from 1503 to 1507. The widow of State Governor Sten Sture the Elder, Lady Ingeborg was the highest-ranking person to have lived in the castle and the only female head of the castle in Häme. Ingeborg got into skirmishes with the Swedish rulers. However, the people of the castle were on her side, and a group of men sent from Sweden did not get the castle for themselves. The castle remained under Ingeborg's control until his death.

In 1837 the King's hall was converted into a prison church to the design of architect C.L. Engel, and the adjacent Queen's chamber was joined in the 1890s. Today the King's hall is used as a banqueting and concert King's hall. The hall has been restored to its 15th century appearance.