Historical structures of the agricultural landscape (HSAL) hold a special position among historical landscape structures. The HSAL inventory in Slovakia aimed at countryside mapping entitled Research and maintaining of biodiversity in historical structures of agricultural landscape of Slovakia. This was established to provide new knowledge of HSAL distribution and conditions in Slovakia. The HSAL database provides outcomes of field mapping and identification of HSAL and their classification throughout Slovakia. The sum of 626 HSAL polygons was recorded in the field, and a total of 3033 polygons were identified as HSAL based on aerial photos. From a land use viewpoint, 4 classes of HSAL were distinguished under the following classification scheme: (1) Historical structures of the agricultural landscape with dispersed settlement, (2) Historical structures of vineyards landscape, (3) Historical structures of arable-land, grasslands and orchards and (4) Historical structures of arable-land and grasslands. The most frequent classes encountered are the Historical structures of arable-land and grasslands, and then the HSAL with dispersed settlement.