Most of the rooms on the basement floor have low barrel vault ceilings with reed formwork, a fact that makes the ceiling of the front tower, which forms the paving of the main floor, a unique feature. This tower had three floors, although the second one collapsed at an indeterminate time and circumstances.
This ceiling has been preserved, however, and reflects a restoration that was undertaken in the eighteenth century. The technique used is Catalan, or flat-brick, vaulting and the most curious thing about it is that part of the framework of an old boat was used for the two main beams, which is why they are shaped obliquely.
In the eighteenth century, the town of Torredembarra was a major seafaring hub and hence there were many shipwrights in the town responsible for building boats.