Pliska was the capital of Bulgaria between 681 and 893 AD. According to a Bulgarian chronicle, it was founded by Khan Asparukh on the place of Slavic settlement. It had an area of 23 km? and was surrounded by a moat and earthwork ramparts. The walls of the inner fortress were 2,6 meters thick and about 12 meters high.
Pliska was seiged by the Byzantine army in 811, but the invaders were soon driven out by Khan Krum. Khan Omurtag brought in artisans and craftsmen to improve the city.
In 892, the city became the scene of a pagan revolt against the Christian legacy of Boris I, after he had abdicated to join a monastery. After the crushing of the revolt, Vladimir (his son) was dethroned and blinded for his treachery. The third son of Boris I, Simeon, was installed into power. One of the first steps of the new ruler was to move the capital to Preslav, a fortified town in the vicinity of Pliska, probably because of the steadily strong pagan influence in the old capital.
The importance of Pliska gradually waned throughout the 10th century with the concentration of power and resources in Preslav. The city was destroyed during the assaults of the Kievan Rus' and the Byzantine Empire between 969 and 972 and was not rebuilt again.
The ruins of the city of Pliska lie 3 km north of the modern village of Pliska. The site of the city is currently a National Archeological Reserve.
