Karacahisar Castle, also known as Eskişehir Castle, is a historic fortress located in the Odunpazarı district of Eskişehir, a city in northwestern Turkey. This impressive castle holds great historical significance and offers visitors a glimpse into the region's rich past. The construction of Karacahisar Castle dates back to the Byzantine era, specifically the 13th century. It was initially built as a defensive structure to protect the city aga..