[citation needed] The area consists largely of a plateau formed from shale rock, which lies at an altitude of about 500 m. It is broken through by numerous valleys such as those of the Our and Clerve.

There are many wet biotopes in the river valleys as well as on the plateaus, which represent important habitats for endangered animal and plant species.

[citation needed] The endangered black stork nests here, the freshwater pearl mussel,[4] the wild cat and the hazel grouse can also be found here.

[3] The park has been designated an Important Bird Area (IBA) by BirdLife International because it supports significant populations of hazel grouse, black storks, European honey-buzzards and red kites.

Other sights include the Vianden Pumped Storage Plant, the world-famous photo exhibition The Family of Man[8] and the Benedictine Abbey in Clervaux, the border triangle near Ouren, the tunnels of the copper mine in Stolzembourg and the escape route around Troisvierges.