The most important and remarkable temple previously male Spaso-Preobrazhensky monastery was its Cathedral. The temple is among the outstanding monuments of architecture and painting of the 16th century.

To date, the Spaso-Preobrazhensky Cathedral, the oldest stone building of the monastery. It is known that the construction of the Cathedral took place between 1506 and 1516 years according to the decree of Vasily III of Moscow Prince. The gang masters were sent from Moscow, although the Manager was appointed by the Italian architect, who built the cathedrals in the Moscow Kremlin. The Cathedral is situated on powerful foundations and repeats the dimensions previously existing on the site of the temple of the 13th century, which was destroyed in a fire in 1501.

Transfiguration Cathedral is a cross-domed three-domed temple, equipped with roof covering, standing on high powerful basement. On three sides the building is surrounded by galleries, namely the Western and southern open bunk, while the North side is closed bunk, built in the 17th century. The Cathedral has a helmet-like heads, which are now fully gilded, although initially were just covered with "white German tinned iron". In the architectural design of the Cathedral one can see elements of the so-called order system and pieces of decoration, indicating that the Cathedral was influenced by inherent Italian Renaissance architecture; to a greater extent for the Cathedral characteristic rigor and conciseness, which are reflected in the Russian architecture of the 16th century.

During the whole period of existence of the Spaso-Preobrazhensky Cathedral he not once been a radical transformation, because of what its appearance was literally transformed beyond recognition. The most extensive alterations began with the work carried out between 1709 and 1717 years 1768 and 1780, 1811 and 1814, and in 1817. Since 1919, the Cathedral restoration works were started, with the main, and at the same time, the final stage was the period between 1957 and 1961 years; all appropriate work was carried out under the supervision of the famous architect – the Karayeva E. M. On the results of all change the appearance of the Cathedral at the Holy Transfiguration monastery was fully restored.

In the question design, the Spaso-Preobrazhensky Cathedral it is important to note that his painting was carried out in the period between 1563 and 1564 years of Yaroslavl and Moscow masters. About this fact the chronicle, which is located in a large round edges on the sides, situated on the Western side of the pillars.

Today the Cathedral of the Transfiguration is the only monument on the territory of Russia, which is still in a period of time and Grozny which has the exact date of all works, as well as the names of the masters.

The painting of the Cathedral not once updated, for example, in 1780 she was fully recorded. After a while, it was prescribed with the help of oil paints, that was quite a significant event, after all, suffered the bulk composition of the last judgment. A small amount of the frescoes were lost during the reconstruction of the temple, and some of the songs part is missing. Restoration of monumental painting continued throughout the 20th century. It is important to note that over the Cathedral worked: Bragin N. And., Pertsev N. In., Yukin P. I. and many others. The last restoration was carried out in the years 1984-1996.