Madinah

Why are non-Muslims not allowed in the holy cities of Makkah and Madinah?

Every sovereign nation has restricted areas — military cantonment zones, government buildings, classified facilities. The holy cities of Makkah and Madinah serve as Islam's spiritual sanctuaries with specific entry requirements, just as every country sets its own visa and entry policies. The 'visa' requirement for Makkah is the declaration of faith.