The Kaaba or Ka'aba (Arabic: الكعبة‎‎ al-Kaʿbah IPA: [ælˈkæʕbɐ], "The Cube"), 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 performing salat (prayer).