The Kaaba in Mecca (Saudi Arabia) is the holiest site in Islam, believed to be the first house of worship built for Allah. It is the focal point of the Hajj pilgrimage and daily prayers (qibla) for Muslims worldwide.
Historically, several pre-Islamic Arabian sanctuaries were also called Kaaba (meaning "cube" or "square building"). Notable examples include:
These were local pagan shrines housing idols; they were destroyed or abandoned after Islam's rise. None hold any religious sanctity in Islam today. The Kaaba in Mecca is unique in its divine origin (attributed to Ibrahim/Abraham) and universal role as the qibla.