Mosque or Masjid is a Place Where Use to do Worship. Muslims Offers Salaah five times a day in Mosque. There are Millions of Mosques around the world in all Countries. Many Mosques are famous due to different reasons. Some are Famous Due to their Beauty While some are famous due to their history. But Do You know which are the oldest Mosques of the World? If you don't know this post for you. Following are Oldest Mosques of the World.