Entry to the mosque is through an imposing porch of seven domed bays with marble and granite columns.[3] The mosque itself is a cube topped by a half-sphere, with symmetrical multi-windowed tympana on each of the four sides. The dome is supported by four towers, one in each corner; its base is pierced by windows. The single minaret is tall and slender; during the 1894 earthquake it crashed through the roof of the mosque.