Great Mosque of Mecca Great Mosque of Mecca The Great Mosque of Mecca, also called "Al-Haram Mosque" (, "the Forbidden Mosque", "the Holy Mosque" or "the Sacred Mosque") or "Grand Mosque of Makkah", is the largest mosque in the world, and surrounds the Islamic "Qiblah", that is the "Ka‘bah" in the Hejazi city of Mecca, Saudi Arabia. Muslims face the Kaaba while praying. One of the Five Pillars of Islam requires every Muslim to perform the "Ḥajj", one of the largest annual gatherings of people in the world, at least once in their lifetime when able to do so, including circumambulating the Kaaba. It
Mecca infrastructure, home to structures such as the Abraj Al Bait, also known as the Makkah Royal Clock Tower Hotel, the world's fourth tallest building and the building with the third largest amount of floor area. During this expansion, Mecca has lost some historical structures and archaeological sites, such as the Ajyad Fortress. Today, more than 15 million Muslims visit Mecca annually, including several million during the few days of the Hajj. As a result, Mecca has become one of the most cosmopolitan cities in the Muslim world, although non-Muslims are prohibited from entering the city. "Mecca" is the familiar form