Map of Constantinople around after Cristoforo Buondelmonti. The District of Blachernae can be seen on the center left part of the map, surrounded on two sides by the walls of the City, below the Golden Horn.
Because of the weakening of the Ottoman Empire conservative Janissaries blocked needed military reform and allowed their state to lose ground to European rivals. Also the weakness in technology included the imperial navy.
Ottomans knew how to glory in space. Crazy complex texture and patterns in a simple room. High ceilings are great for contemplation. I believe creative thinking is fueled with plenty of room to work above.