The Ivanovo rock-cut churches comprise a group of religious buildings hewn into the hard rock and known for their beautiful and well-preserved frescoes from the Middle Ages. The number of churches was about 40, while the number of other buildings was about 300. The frescoes of the thirteenth and fourteenth centuries preserved in 5 of the churches are great examples of Bulgarian medieval art, and many inscriptions dating back to the century in monastic buildings, including the famous reliefs of the monk Ivo Gramatik.