Public improvements started in 18thcentury in Yenikoy were made in compliance withthe ethnical origins of the community. Non-Muslims were dominated and Greek andArmenian communities had churches in Yenikoy. Armenian Surp Asdvadzadzin Churchand Complex, is a significant one of those churches and it was devoted to the VirginMary. The complex was built in the middle of 18th century first and it was reconstructedexactly the same with its current situation in 1834. The complex was formed around abasilica planned church with a single nave in the center. There is a baptism room anda pastaphorion room on the sides of the Church and a small graveyard in the backyard.There is a cistern at the entry of the surrounding walls of the church, and a little bitfurther located the foundation building. There are fountains is several places. While theparsonage is in the south of the Church, Mamigonyan School, a big part of which couldnot reach today, is located in the south. Surp Asdvadzadzin Complex is an example of theapplication of Turkish Islamic social complex in a non-Muslim construction complex. Thecomplex was planned to meet the needs of the surrounding community and today it rendersservices to the Gregorian Armenians. Thanks to the restoration works performed in 2005-2006, it is in a very good condition today. Recently restoration works have been startedfor Mamigonyan School and the parsonage. The written sources about Armenian SurpAsdvadzdzin Complex, which is similar to Turkish Islamic social complexes, are mainlyabout the church. In this paper, church and other constructions in the complex, which arein integrity from architectural aspects, are discussed under different headings.