Why is the Kaaba important to Muslims?

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Kaaba, also known as, Ka'bah, Kabah and Caaba is the center of the holiest place of worship in Islam (Submission in English), i.e. the Sacred Mosque of Mecca, Al Masjid Al-Haram. Its name is an Arabic word that means a home or a room that looks like a cube.. It is a cube shaped stone structure built in the middle of the Sacred Mosque. The Kaaba was built by prophet Abraham as a landmark for the House of God, for the sole purpose of worshipping of God alone.