Mudanya - Tirilye Hagios Sergios- Medikion Monastery
It is located on the road from Tirilye to Eşkel port. Although its construction is not known for certain, it is dated between 780-810. There are two inscriptions on the door of the building, of which a small number of ruins have survived to the present day. The name of the church is mentioned in the letters of the high priest Mikhael Psellos in 1054.