Each little place in it is history.
The earliest traces were found on the Trapezitsa Hill (dating back to first half of the 3rd millennium BC). Remnants on Tsarevets Hill date back to the end of the Bronze Era (13th century BC). This oldest settlement was inhabited by Thracians (the tribes of uzdicenses and crobises) and existed by the end of the Iron Era. Its prosperity is related to 6th century BC - till 1st century AC. Its traces in the first centuries of the Roman Rule are lost on our lands (at the beginning of the new era).
The next layer of Tsarevets is early Byzantine, from the 5th to the first half of the 7th century when there was a fortified town on the hill (one of the supporting points of Byzantium in the northern part of the Balkan Peninsula), which withstood for 3 centuries.