curved and engraved on the entrance wall of the naubat khana or naqqar khana, red fort, delhi

curved engraved naubat khana naqqar ancient arch architectural feature column architecture arts culture entertainment asia blue building entrance india cultures delhi facade famous place fashion fort grass green color history horizontal islam islamic marble rock people old outdoors red sky travel destinations unesco world heritage site design wall khana stands outer court inside complex capital city india musicians announce arrival emperor dignitaries public audience diwan- -am played music five times day chosen hours