Ayazma Mosque is an 18th-century Ottoman imperial mosque in Üsküdar, on Istanbul’s Asian side. Sultan Mustafa III commissioned it, and Mehmet Tahir Efendi designed it; construction ran from 1757 to 1761. The hillside location looks across the Bosphorus toward Istanbul’s historic skyline. Look for the Ottoman birdhouse built into the exterior, a small architectural detail that reflects care for animals. It remains a place of worship in a quiet residential area. Check access before making a special trip, as it has been closed during restoration.
The mosque’s commission and architect

Sultan Mustafa III commissioned Ayazma Mosque during his reign. Mehmet Tahir Efendi was its architect, and the building was constructed between 1757 and 1761.
FAQ
When was Ayazma Mosque built?
Construction took place between 1757 and 1761, during the reign of Sultan Mustafa III.
Who designed Ayazma Mosque?
Mehmet Tahir Efendi is named as the mosque’s architect.
Can you go inside Ayazma Mosque?
Access has been affected by restoration and closures. Check current access and prayer-time arrangements before visiting.