 The park was established in 1992 in order to protect natural complexes of the Green (Žalieji) Lakes and cultural complexes of Verkiai Palace and a park, Kalvarijos and Trinapolis as well as other valuables.The park occupies 2,673 ha (compared to 5,565 ha of the elderate), being one of the biggest city parks in the world.Forests cover 76.5%, reserves occupy 52.7%, and 23.9% of the territory is designated for recreation.