Palaces were built on a grand scale not only by the Qajars, but also by the Safavids (1502–1736). Evi­dence of this is the Ali-Kapu palace com­plex, inscribed in the archi­tec­tur­al frame of the famous Isfa­han square. Built at the begin­ning of the 17th cen­tu­ry, it was a com­plex sev­en-sto­ry struc­ture, from the spa­cious gallery of which the Per­sian kings could watch mil­i­tary parades. Par­tic­u­lar­ly curi­ous is the sixth floor of the palace. It was called the Musi­cal, because it was here that excel­lent acoustic con­di­tions were cre­at­ed for the per­for­mance of musi­cal works. Roy­al recep­tions and ban­quets were also held here, as well as the most spa­cious and strik­ing lux­u­ry rooms.