The Ecclesiastical Museum of Siatista seeks to familiarize the ordinary citizen with ecclesiastical art, but also to promote the relations developed by the mountain Siatista with the well-known centers of art production. The space hosting the Ecclesiastical Museum is located on the first floor of a newly built building in the precinct of the Metropolitan Megaron Siatista. The area of ​​the room is 144 m². The exhibits include icons, wood carvings, miniature artifacts, books, vestments and have been collected from the temples and monasteries of the region.

Hosted pictures of the 16th century, early Era of the creation of Siatista, 17th century. With elements of western style, such as the picture with the revelation of Theodoros Poulakis of the 18th century. The miniature works represent the various trends of the era that were created. It is worthwhile a gospel cover, which is accompanied by text printed in 1590. Interesting is also the collection of printed books and manuscripts, such as the Zosima code, and manuscripts with theological and philosophical content. Most books have been printed in well-known printing houses of Constantinople and Venice of the 17th and 18th centuries.There are also functional vestments, representing embroidery art, all of which come from the same workshop. The museum belongs to the Holy Metropolis of Sisaniou and Shiattis, which is responsible for its operation, while the 11th Ephorate of Byzantine Antiquities is supervised to preserve the exhibits.