Doors in Marrakech

During our walk today, Madani (our guide) explained how doors work here. There is an inner door, and an outer door, and a different knocker (with a different sound) on each, as you see here:

The small door is for family, and the large door is for guests.  Since the knockers sound different, you know if it's family or friends at the door depending on the knock.  Friends are treated to the big door, since it's more hospitable, but family goes through the small door to save energy.  Also, the Muslim women don't have to cover if they know it's family entering the house.

Cool stuff.