☪ The Kaaba or Ka'aba is a cuboid building at the center of Islam's most sacred mosque, Al-Masjid al-Haram, in Mecca, Saudi Arabia. It is the most sacred site in Islam. Wherever they are in the world, Muslims are expected to face the Kaaba – i.e. when outside Mecca, to face toward Mecca – when performing salat (prayer). From any point in the world, the direction facing the Kaaba is called the qibla.