Brief synthesisThe frescos of the Ivanovo churches reveal an exceptional artistry and a remarkable artistic sensitivity for 14th century painting and Bulgarian medieval art; they are an important achievement in the Christian art of South-Eastern Europe. The five historical monuments in this group (chapels, churches, etc. Criterion (ii): Many churches, chapels, monasteries and cells were cut into the natural rock along the Rusenski Lom river, during the 13-14th centuries. AuthenticityCreated in the natural cavities of a karst massif, the authenticity of shape, material and substance of the Rock-hewn Churches of Ivanovo has been preserved. The first stage of work on the 14th century murals of the collapsed St. Todor Church has also been completed.