Gardiki Castle is the Byzantine castle located on the hill ,near of the village Agios Matthaios, on the southwestern coast of Corfu. The castle dates from the XIII century and It was built by a ruler of the Despotate of Epirus (by Michael I Komnenos or his son Michael II Komnenos, sentences of historians are divided). According to history Gardiki was one of three castles which defended the island before the Venetian era (1401–1797). It is located in a so-called defensive triangle formed Gardiki guarding the island’s south, Angelocastro the northwest and Kassiopi Castle the northeast. Construction of the building has been preserved to this day , it includes eight squared shaped tower, remains of the chapel with remnants of religious portraits of saints , located at the top of the southern tower. Unfortunately the interior of the castle is in ruins. In spite of all Gardiki Castle is considered one of the most imposing architectural remains in the Ionian Islands and is worth to see.