The **Ka'abah**, located in Mecca, holds a significant place in Islam as the most sacred site. According to Islamic tradition, it was originally **built** by **Prophet Ibrahim (AS)** and his son **Ismail (AS)**. They constructed the structure as a house of worship to Allah. This act is an important event in Islamic history, and the Ka'abah has since been central to Islamic rituals and pilgrimage, known as the **Hajj**.