What do Muslims believe the Kaaba is?

Muslims believe the Kaaba is a sacred structure located in the center of the Grand Mosque in Mecca, Saudi Arabia, and is considered the holiest site in Islam. It is a cube-shaped building that serves as the qibla, the direction toward which Muslims pray. The Kaaba is also a focal point during the Hajj pilgrimage, which is one of the Five Pillars of Islam. It symbolizes the unity of Muslims worldwide in their worship of the one God, Allah.