Diana Fortress (Kladovo, Serbia)

It is located on cliffs of the Đerdap, above the Danube, in the Karataš archaeological site near Kladovo. The main buildings were built on a strategic location overlooking the Danube frontier with stone in 100 AD during the reign of Roman Emperor Trajan, who had a military camp located at the vicinity. Further modifications were made at the end of the 3rd and beginning of the 4th century when additional towers were added towards the river for extra defence towards the Danube shores.