The Kaaba also referred as al-Ka bah al-Musharrafa...

The Kaaba also referred as al-Ka bah al-Musharrafah (the Holy Ka'bah), is a building at the center of Islam's most important mosque, Al-Masjid Al- ar m (The Sacred Mosque), in the Hejazi city of Mecca, Saudi Arabia. It is the most sacred site in Islam. It is considered by Muslims to be the Bayt Allah (House of Allah). Its location determines the qiblah (direction of prayer). Wherever The Kaba is the building towards which Muslims face five times a day, everyday, in prayer. This has been the case since the time of Prophet Muhammad (peace and blessings be upon him) over 1400 years ago.
One of the Five Pillars of Islam requires every Muslim who is able to do so to perform the Hajj at least once in their lifetime. Multiple parts of the hajj require pilgrims to make Tawaf seven times around the Kaaba in a counter-clockwise direction. Tawaf is also performed by pilgrims during the Umrah. However, the most significant time is during the hajj, when millions of pilgrims gather to circle the building within a 5-day period.