Kastamonu Castle is a historic fortress located in the city of Kastamonu, Turkey. It was built during the Byzantine period and later expanded by the Seljuks and Ottomans. The castle sits on a hill, offering panoramic views of the surrounding area and the Kastamonu River. The structure features impressive stone walls and several towers, showcasing the architectural styles of different eras. Over the centuries, Kastamonu Castle has served various purposes, including military defense and a royal residence. Today, it is a popular tourist attraction, drawing visitors interested in history and stunning landscapes.