The factors that decide about physiognomy of landscape have dynamie character and came from influence of natural and anthropogenic effects and processes. That point of view meet the standards of European Landscape Convention, where visual, cultural and human attributes of landscape are threatening equivalent to ecosystem functioning. That fact gives the opportunity to put the question whether the activity in the national parks, connected statutory with protection of visually valuable, often the only existing landscape, give appropriate ecosystem protection and landscape stability or maybe pull down steady state of driving factors, bringing about loss of landscape unity, its identity and state of its aesthetic sustainability. Above mentioned problems have been analyzed on example of Narew National Park. The function and land use of the river valley depend on hydrological regime. The river was the factor which decide against terrain accessibility and possible direction of land use. In consequence that follows to adaptation of traditional economic to natural conditions, historically securing the stability of environmental structures and coexisting with them physiognomic and cultural elements of landscape. In consequence that made characteristic composition of structural patches and landscape interiors which are forming unitary shape of visual landscape. That values in accordance with records of protection plan of NPN should be secured by stimulation of processes that are positive from point of view possibilities of restoring (or maintaining) natural landscapes and simultaneously giving chances to slow down the actions that devaluate cultural landscape. Every observed landscape change, especially change of spatial composition, landscape diversity, harmony, naturality and identity indicates short term landscape stability and allow to measure effectiveness of protection activities. This allow to verify crucial factors for trends and rate of landscape changes (including natural and anthropogenic elements that cause fast change of visual landscape) and to identify landscape structures that characterize themselves with the highest dynamic.