Here you see to the right the "great arch" under the suite of rooms. It provides an easy shortcut to, for instance, Galata Bridge.

The building at the end of the wall (surrounding the mosque's garden) was the muvakkithane, the house and workroom of the müneccim, the mosque astronomer. He had to regulate the times for prayers, exact times of sunrise and sunset during Ramazan, and doubled as an astrologer.