The Kaʿba is a cuboid structure in the centre of Mecca and is the most prominent sacred structure in the Islamic world. Also known as God's house (bayt Allāh) , it is the direction of prayer (qibla) for Muslims across the world and the focal point of several rituals performed by pilgrims undertaking the ḥajj and the ʿumra (the lesser pilgimage). It is approximately fifteen metres tall at its highest point, and its four sides are between approximately ten and thirteen metres long. Inside the Kaʿba, the roof is supported