It is prohibited to travel for the purpose of venerating a specific place, except the three mosques. Undoubtedly, Shari`ah forbids tourism in places of corruption, where alcohol is drunk and immoral actions take place and sins are committed. It is not permissible for women to travel without a Mahram. In principle, it is permissible for non-Muslims to visit Muslim countries. Once a non-Muslim tourist is granted an entry visa by a Muslim state, then he is assured protection until he leaves.