The Kaaba is a cuboid-shaped building in Mecca, Saudi Arabia, and is the most sacred site in Islam.The building has a mosque (Masjid) built around it, the Masjid al-Haram. All Muslims around the World are supposed to face the Kaaba during prayers, no matter where they are. From any given point in the world, the direction facing the Kaaba is called the Qibla.
One of the Five Pillars of Islam requires every Muslim to perform the Hajj pilgrimage at least once in his or her lifetime if able to do so. Multiple parts of the Hajj require pilgrims to walk seven times around the Kaaba in a counter-clockwise direction (as viewed from above). This circumambulation, the Tawaf, is also performed by pilgrims during the Umrah (lesser pilgrimage).However, the most dramatic times are during the Hajj, when about 6 million pilgrims gather to circle the building on the same day. The Kaaba is located inside the Masjid al-Ḥarām (المسجد الحرام, the "Sacred Mosque") in the center of Mecca (مكة Makkah). It is a cuboid-shape structure which is made of granite quarried from nearby hills. Standing upon a 25 cm (10 in) marble base that projects outwards about 35 cm (14 in). It is approximately 13.1 m (43 ft) high, with sides measuring 11.03 m (36.2 ft) by 12.86 m (42.2 ft).
Inside the Kaaba, the floor is made of marble and limestone. The interior walls are clad with marble halfway to the roof. The marble is inset with Qur'anic inscriptions. The wall directly adjacent to the entrance of the Kaaba has six tablets inlaid with inscriptions. The top part of the walls are covered with a green cloth embroidered with gold Qur'anic verses. Caretakers anoint the marble cladding with scented oil used on the Black Stone outside. Three pillars stand inside the Kaaba, with a small altar set between one and the other two. Lamp-like objects (possible crucible censers) hang by a rope above the platform. An enclosed staircase leads to the roof.
Religious significance: Qibla: The Qibla is the Muslims name for the direction faced during prayer.[Quran 2:143–144] It is the focal point for prayer. The direction faced during prayer is the direction of where the Kaaba is.
Pilgrimage: The Haram is the focal point of the Hajj and Umrah pilgrimages.that occur in the month of Dhu al-Hijjah in the Islamic calendar and at any time of the year, respectively. The Hajj pilgrimage is one of the Pillars of Islam, required of all able-bodied Muslims who can afford the trip. In recent times, about 3 million Muslims perform the Hajj every year.