The frescoes of the Cathedral

The walls of the cathedral are covered with frescoes and Russian style ornaments. The current ornaments were repainted during the 1893 renovations of the cathedral, in the same style as the original. Ten apostles are depicted in the frescoes, eight on top of the doric columns and two on the western arch. They were painted in the same Italian academic style as the iconostasis by a skilled painter from St.Petersburg, named Grigori Prokofjevits Prokofjev. The starry sky that covers the cupola is surrounded by four metropolitans of Moscow. The most intriguing fresco is the one above the iconostasis, depicting Lord Sabaoth. Lord Sabaoth is a depiction of how Daniel saw God in the Old Testament. 

The last time the frescoes and ornaments were restored was during the 1963-1968 renovation. The ornaments have deteriorated since those times and you can see dark spots that were caused by humidity. Only the starry sky has been restored in 2016.