Today's Inspiration #5
The mosque at Zaria is one of the few remaining examples of the historic Hausa religious building tradition, though its exterior underwent a complete redesign in the 1970s.
The mosque complex wall encloses the haraba, the narrow courtyard that surrounds the mosque. Within the wall are three main gate, or kofar, on the north, south, and west walls. These entrance gates or zauruka (singular: zaure) are inspired by the Fulbe style in that they must be passed through in a circular manner so as not to allow a direct view into the haraba from the outside. The vestibule spaces created by these indirect entries also serve as ablution chambers and each contains large water jugs for the purpose of ritual cleansing before entering into the complex. Also, because women were traditionally barred from the sahn, they used these zaure vestibules for prayer. These zaure are roofed with a flat, corniced terrace. The zaure roofs are accessible by matakala steps specifically for the call to prayer. 
 Source: Archnet http://archnet.org/sites/4180/media_contents/9377