Friday's historic prayers in Turkey's Hagia Sophia Mosque marked the first acts of worship there in 86 years. Thousands of people took part in the traditional Friday prayers both inside and outside the historic mosque in Istanbul, Turkey's largest metropolis. Before the Friday prayers, Turkish President Recep Tayyip Erdoğan recited from the Quran inside the reopened mosque, choosing from both the Surah Al-Fatihah and the Surah Al-Baqarah. Later, four muezzins from the mosque's four minarets recited the adhan, or call to the prayer, and the people started the Friday prayers. Besides being a working mosque, Hagia Sophia is also among Turkey's top tourism destinations for domestic and foreign visitors. In 1985, during its time as a museum, Hagia Sophia was added to the UNESCO World Heritage List. It served as a church for 916 years until the conquest of Istanbul, and a mosque from 1453 to 1934-nearly 500 years-and most recently as a museum for 86 years.