Pliska is the first capital of Bulgaria and the cradle of the present-day Bulgarian state. Founded by Khan Isperih (Asparuh) in 681. Pliska is, in addition to being the capital, one of the largest and richest cities in Europe and the world. The entire walled complex is located on an area of ​​0.5 sq. km. The city was gigantic for medieval scales – 23.3 sq. km. The palace of Khan Krum was built on 500 sq. m and is among the most remarkable monuments. The palace had a reservoir and spacious baths. The second expansion of the city is associated with the reign of Khan Omurtag (814 – 831). He completed the fortress walls, built pagan temples and built the so-called Throne Hall. In the Inner City, the best-preserved building is the Great Palace. In the Outer City, remains of dwellings, workshops, neighborhood churches and farm buildings have been discovered. 1.3 km from the eastern gate of the Inner City is the Great Basilica – the largest Christian temple in Southeastern Europe since the time of the conversion of the Bulgarian people. The discovered remains have been preserved and are set up as an open-air museum, which can be visited even during non-working hours. Finds from the reserve are exhibited in the museum exhibition and are mainly related to the daily life, material and spiritual culture of the inhabitants of the old capital.