Pliska (Плиска) is the name of both the first capital of Danubian Bulgaria and a small town (formerly village known as Aboba) which was renamed after the historical Pliska after its site was determined and excavations begun.
Pliska was the capital of Bulgaria between 681 and 893 AD. According to a Bulgarian chronicle, it was founded by Khan Asparukh. It is called Pliskusa by Georgios Kedrenos and Anna Comnena. It had an area of 23 km² 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 sacked by the Byzantine army in 811, but the invaders were soon driven out by Khan Krum (see Battle of Pliska). Khan Omurtag brought in artisans and craftsmen to improve the city. In 886, Boris I founded the Pliska Literary School (after 893 Preslav Literary School), which was headed by Naum of Preslav.
In 892, the city became the scene of a pagan revolt led by King Vladimir. After the crushing of the revolt, Vladimir was dethroned and 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 Archaeological Reserve.
Under Ottoman rule, the village known as Pliska since 1947, was instead caled Aboba, a name which it kept until 1925, when the name was changed to Pliskov, a variant of its current name. The settlement has a population of 1124 and is located 146 m above sea level in Shumen Province at the south end of the Ludogorie plateau. It is approximately 400 km northeast of Sofia, at .