Al-Masjid al-á¸¤arÄm meaning "The Sacred Mosque" is the biggest mosque in the World. Situated in the conurbation of Makkah, it environs the Kaaba, the place which Muslims worldwide face towards while performing daily prayers and is Islam's sanctified place. The mosque is also known as the Grand Mosque. The present structure encloses an area of 356,800 square meters (88.2 acres) counting the outdoor and indoor praying spaces and can house up to four million Muslim worshipers during the Hajj period, one of the biggest annual assembly of people in the world. Islamic tradition holds that the Mosque was first erected by the guardian angels before the creation of mankind, when Allah intended a place of worship on Earth to replicate the house in heaven called al-Baytu l-Ma'mur - "The Worship Place of Angels".