Art historian Villem Raam (1910 - 1996) introduces three medieval architectural monuments in Estonia - Karja St. Catherine's Church, Muhu St. Catherine's Church and Pöide St. Mary's Church - in Muhu and Saaremaa islands. All three churches are genetically related. We can see the grand old man of Estonian art history in the situation most characteristic to him - communicating and working with old buildings.