The well-known fortified Troupakis-Mourtzinos complex includes a building that has not yet received proper attention. It is a rectangular, vaulted hall measuring 6.22 by 4.04 m., without any special features. However, one may observe a row of quadrilateral holes that pierce the outside of the walls at their mid-height, slightly below the base of the vault. On the basis of this particular detail, the building is identified as a gunpowder storeroom, while its function is examined in the context of the period when it was constructed; finally it is compared to other similar buildings within or outside the confines of Messenia.
