In the 14th–15th centuries, the Paršpilis hillfort occupied an important strategic position. The Paršpilis Castle that stood here is often mentioned in the descriptions of Lithuanian roads made by Teutonic scouts in 1384–1402: "... 2 miles to Paršpilis, where the first night's lodging in the country is provided, there is fodder, but no water, and the road is very rough." in descriptions of Lithuanian roads made by Teutonic Knights: "... 2 miles to Paršpilis, where the first night's lodging is provided in the country, there is enough fodder, firewood, and water, enough for a permanent stay, and one can spend two nights in that country." The complex consists of several hills: Pilies Hill, located near the Melnyčia stream, Parškalnis, located southeast of Pilies Hill on the other side of the Melnyčia stream, and Sargakalnis, the highest hill in the area, located west of these hillforts. The slopes of Pilies Hill are steep, reaching a height of 14 m. At the top of the hill is a 100 m long and 40-50 m wide plateau. At the top of Parškalnis (called "Parsepil" by the Teutonic Knights) is a 100x120 m plateau. At the top of the hill is the Burbiškiai burial ground.