Why do mosques have 4 minarets?

As well as providing a visual cue to a Muslim community, the call to prayer is traditionally given from the top of the minaret. In some of the oldest mosques, such as the Great Mosque of Damascus, minarets originally served as watchtowers illuminated by torches (hence the derivation of the Word from the Arabic nur, meaning "light"). In more recent times, the main function of the minaret was to provide a vantage point from which the muezzin can call out the adhan, calling the faithful to prayer.

In most modern Mosques, the adhan is called not in the minaret, but in the musallah, or prayer hall, via a microphone and speaker system. However, the minaret remains as an architect symbol for the mosque.