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(FILES) - A file picture taken on October 5, 2014 shows an aerial view of the Clock Tower and the Grand Mosque in Saudi Arabia's holy city of Mecca. At least 60 people were killed and dozens injured when a crane crashed into the Grand Mosque of Mecca on September 11, 2015, the civil defence said on Twitter. AFP PHOTO / MOHAMMED AL-SHAIKHMOHAMMED AL-SHAIKH/AFP/Getty Images
(FILES) - A file picture taken on October 5, 2014 shows an aerial view of the Clock Tower and the Grand Mosque in Saudi Arabia's holy city of Mecca. At least 60 people were killed and dozens injured when a crane crashed into the Grand Mosque of Mecca on September 11, 2015, the civil defence said on Twitter. AFP PHOTO / MOHAMMED AL-SHAIKHMOHAMMED AL-SHAIKH/AFP/Getty Images

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Why is Mecca's Grand Mosque so important?

The Grand Mosque in Mecca is one of Islam's holiest place. CNN's Isha Sesay reports on its significance to the Muslim community.

Why is Mecca's Grand Mosque so important?

The Grand Mosque in Mecca is one of Islam's holiest place. CNN's Isha Sesay reports on its significance to the Muslim community.