Because here is the religious center in Shiraz and many people come to visit here from all around the world. People from every part of Iran come here. The Shrine become crowded in religious ceremonies and especially in Nowruz.
Here you will see the Islamic-Iranian architecture. If you are interested in religious sightseeings, here is one of the must-see places for you. Don't miss here too. Really you feel better here and make you unworldly.
Better to go at night.
Mon-Su: 06:00-23:00