The field surveys of the area of Pliska – the first Bulgarian capital – are part of the “Development of the Archaeological Map of Bulgaria” project. At the same time, they are a continuation of the long-term development for completion of the Pliska archaeological map, which began in the distant 1899. The creation of the archaeological map of Pliska has a long history and numerous authors. The main goal has always been the registration of visible sites within the Great earthen rampart – the Outer city of Pliska, as well as in the near vicinity of the town. So far intensive field surveys in the Pliska area were conducted in 2010–2012. In 2017, over a period of 25 days, 4 km2 were covered in the eastern, northern and western parts of the Outer city, which has a total area of ​​23 km2. Seventy six sites - settlements, buildings, building complexes, churches and a necropolis were registered. The common criteria for collecting and classifying information from the survey area set the basis for building an objective picture of the settlement structure of the Outer City of Pliska.