Around 1100, a square keep was built as well as a kitchen, a chapel and residential rooms indicating that an aristocratic family lived there at the time. During the first half of the 12th century, a new residential tower and a prestigious decagonal chapel were added while the palace itself was extended. At the beginning of the 13th century, a new two-storey palace measuring 10 by 13 metres (33 by 43 ft) was built with a sumptuous gallery connecting it to the chapel.