There were TWO reasons why this mosque had to be built on water and in Morocco:
1. *The throne of God was upon waters* and *From water have we created life* (Verses from the Koran)
2. To restore moroccoan traditional craftmanship.
It's the tallest religious building in the world, and the second largest area of the Muslim world, after the Mosque in Mecca.
Two thirds of it is over water and while inside you can hear it when it's high-tide.
