The church is a combination of two architectural types: it is a three-aisled basilica on the ground floor, and a cross-vaulted church on the upper floor, of the composite, four columned type, with five domes. The central east apse is five-sided while the two lateral ones are semihexagonal. To the west is a two-storeyed, domed narthex, richly decorated with wall paintings of the Palaeologan art of the 14th century. The good quality frescoes are today partly covered by a later plaster.
Today it is the parish church of the village.
The area of Leontarion is full of remains of the Byzantine period, which indicate that it was of great importance to the Despotate of Moreas.
Other Byzantine monuments to be seen in the area are: the Castle of Leontarion, the church of St. Athanase (14th century), of the Taxiarchs, of Aghioi Pantes (14th century), of St. George, of Prophet Elias, of St. John as well as many abandoned monuments: the Monastery of St. Nicholas, the churches of St. Basil, of St. Kyriaki and of the Transfiguration of Christ.