The castle of Deveboynu

You can visit Dereboynu Castle as part of the historical sites of Eskişehir in the mountainous Frigya region in the village of Çukurca, which is attached to Seyitgazi. It is known that the castle, which can be reached by narrow rock stairs, was once a lookout point used to control the Doğanlı Valley. On the northwest side of the rock, visitors can see two rock tombs that are believed to belong to the Phrygians.