Xeste 4. It is a magnificent three-storeyed building, the largest excavated up to now. All its facades are revetted with rectangular ashlar blocks of tuff. The fragments of frescoes that have so far come to light belong to a composition which adorned the walls on either side of the staircase at the entrance of the building, depicting life-size male figures ascending the steps in procession. It was in all probability a public building, judging from its unusually large dimensions, the impressive exterior and the decoration of the walls.