The Royal National City Park contains a cross-section of the majority of the natural features that occur in Svealand: deciduous and coniferous forests, meadows and pastures, wetlands, lakes and watercourses as well as a long coastline and several islands.
The park lies in a rift valley landscape, that is, with ridges alternating with valleys. These stretch mainly from northeast to southwest and shape the landscape accordingly with lakes and bays such as Brunnsviken and Lilla Värtan and long drawn-out valleys with clay-rich soil. Stora Vargjakten and Lappkärrsbergen are the most dominant ridges.
The Royal National City Park is characterised to the west by the Stockholm Ridge which has two striking hills: Hagakullen – partly quarried and refilled with demolition rubble– and Kvarnkullen north of Brunnsviken.
The varied topography is one reason why the natural features are so diverse. Another factor is man’s use of the landscape over the centuries. For example, Djurgården was used as meadows and pastures for several centuries, which has favoured many species. Other parts received their character by extensive planting of trees. The artificial park landscape has also created its special habitats. The great concentration of oaks and other noble broadleaf trees such as elm, ash, linden and maple are a result of the creation of the hunting park.
The large diversity of habitats has produced a great richness of species. Seen regionally and nationally the park’s greatest biological value is linked to oak and other noble broadleaf trees.