Shiraz is home to the magnificent Shah Cheragh shrine, one of Iran's most important pilgrimage sites, featuring stunning mirror work and Islamic calligraphy. The city served as the capital of Persia during various Islamic dynasties and boasts numerous historic mosques including the Nasir al-Mulk Mosque with its famous colorful stained glass. As the birthplace of renowned Persian poets Hafez and Saadi, Shiraz remains a vibrant center of Islamic culture and Persian literary heritage.