This church, built in 1806, is a three-nave basilica with three red domes, dedicated to three different holy figures: the central nave to the Assumption of the Virgin Mary, the right to Saint Dionysos who is the patron of Aegina, and the left to Saint John the Theologian.
Among other things, the church was used as a parliament in 1827 and 1828 for the inaugural ceremony of the first government of Greece. It was also used as a meeting place of the Assembly of Elders and for a short period of time covered the needs of mutual learning.
Furthermore, at the Mitropoli Church, the inhabitants of Aegina welcomed Governor Kapodistrias on January 11th 1828 and a few days later, on January 28th, he took his oath as the first governor of the Greek state with his Panhellenic Council which consisted of 27 members.
In the Cathedral you will find many historical heirlooms, a marble iconostasis and some remarkable murals. The bell tower next to the church is the work of St. Kleanthis and Ed. Schaubert.