The church of the Holy Apostles is a double monument with great historic significance for the Greek People. During the 13-6-86 earthquake the dome and part of the walls collapsed while the rest suffered severe damages. The remaining stone walls were consolidated by cement grouting and the vaults, dome and drum were rebuilt. The walls of the Holy Bema, built in the 12th century, were repaired by cement grouting up to the springing of the arches and epoxy resin grouting where the existence of frescoes prevented the use of cement mixtures. The two buildings were then structurally separated.