The elements of the tertiary landscape structure according to the geosystem theory conformed to the researches on the Institute of Landscape Ecology of the SAS embraces non-material but mapable spatial elements, based on the spatial arrangement of the material elements of the primary (the abiotic complex) and the secondary landscape structure (the present biota, man-made objects and land cover elements). Defined as socio-economic phenomena/factors those elements express the interests, manifestations and consequences of the society from the point of view of the utilisation of the landscape space, natural resources and the environmental care. They display the bans, limitations, regulations and rules for the human activities on the covered area. They are defined in the acts, regulative, directives, conventions, rules, methodics, norms, plans, programs, development documents. The areas of the socio-economic phenomena are virtually delineated buffer, safety and hygienic zones of industrial, transport, communal and agricultural objects, protected and conservation areas, quality characteristics, zones with endangered environment, administrative and sectorial borders. Since they are non-materialistic, but covers a considerable part of the country, create a continual spatial network, we may legitimately denominate this structure as the invisible infrastructure in the country, which decisively influences the human activity in the landscape.