The General view of the Ottoman Empire architectura for the 18th century and a sample Üsküdar Ayazma Hall Buildings

The influence of West Europe effects on the Ottoman Empire in 18th Century till the era of Sultan HI. Mustafa and Ayazma Külliyesi, which is a construction of 18th Century when the reflection of these affects are seen, were studied. Firstly, the reasons for expansion of Ottoman Empire towards the West Europe effects were investigated and the said process was explained from many aspects such as economy, politics, military and architecture. In explanation of this process, a chronological order was followed in accordance with the Governing times of the padisahs (sultans) such as : DI. Ahmet Era and Tulip Era, I. Mahmut Era, IH; Osman Era and HI. Mustafa Era. In order to analyse the properties of Ayazttîa Külliyesi coming from the location it is present and its environment, the place of Üsküdar District within İstanbul, its topographical properties, historical development and physical shaping were explained..5 :. In order to learn about and to introduce theî Ayazma Külliyesi (Complex of buildings adjacent to a mosque) as much as possible, the construction date of Külliye, Sultan HI. Mustafa, padişah (sultan) of the era, the distinguishedKhead architect of the era; Mehmet Tahir Ağa, the location properties of Külliye and the buildings of Külliye were investigated. The mosque and hünkar (Sultan) outbuilding of the Palace, fwo biggest construction parts of Külliye, which could survive till today, were studied in a detailed manner. Hünkar (Sultan) outbuilding of the Palace was studied with its plan properties, structural properties, front properties, and ornament program headings. As for the mosque, its plan properties, construction system, top cover, windows, doors, other elements, construction technique and material, front system and ornament program headings were studied. After a general overview, its comparison with other Complexes of buildings adjacent to a mosque of era was made. Finally, the protection of Ayazma Külliyesi was prepared and the protection problems of the Külliye and its environment were stated and the protection proposals were made. All of the buildings of the Ayazma Külliye couldn't survive till today. While there is no trace left from the constructions such as muvakklthane-place for ezan (call to prayer), water way and primary school, there are a group rof ruins from the foundation buildings. While constructions such as entrance doors, fountain, cattle pen, warehouse, toilets, hünkar (Sultan) outbuilding of the Palace and mosque survived till today, buildings such as Ayazma Primary School, fountain in mosque garden and fire pools were later added. Ayazma Külliyesi was constructed through a procedure integrating Ottoman Classical Architecture and Western Influences and it has baroque properties. In the constructions of Külliye, which could survive till today, there are some deformations in construction elements some kind of incompleteness, pollution, misuse and incompliant additional construction elements. In addition to the problems of Külliye, the region including Külliye has considerably lost its historical prpperty. Many incompliant buildings, which are unsuitable for Külliye from the point of view of mass, front, material and height, were built around Külliye. ''*"'. Key words: Ayazma Külliyesi, 18th Centura Ottoman Architecture, West Europe effects, and Sultan EI. Mustafa Era, Üsküdar.