This is the Rila Monastery, the arcade of the Birth of Our Lady Church! The 360 degree image is perfect for viewing the fresco painted carefully over the wall and ceiling edge to edge. You would understand that the last supper, heaven and hell have been drawn and taught to people. The interior of the church is decorated with fine wood carvings which is covered by gold leaf and so many icons. However, unfortunately photography is prohibited so I can not share my experience! (Tears)
Visited Sofia, the capital city of Bulgaria. So, I extended my journey to the Rila Monastery which is said to be sure to visit. Two hours by car from Sofia, passing through mountains which is looks like Shosenkyo(昇仙峡), the Monastery was a space isolated from the worldly life surrounded by residential buildings like the walls.