It goes almost unnoticed, but there it is: the only remaining element of what was once the Aljama Mosque of Granada, its aljibe or water cistern. The first references can be found in 11th century. Its capacity is of 157 cubic meters, the second in volume after the Aljibe del Rey. It occupies two thirds of the subsoil of the small square located in front of the Lonja. The other third, is under the Lonja.