1. Kornik ArboretumKornik Kórnik [ˈkurɲik] is a town with about 6,800 inhabitants , located in western Poland, about 25 kilometres south-east of the city of Poznań. It is one of the major tourist attractions of the Wielkopolska region and the Greater Poland Voivodeship because of the historical castle and arboretum, which is amongst the oldest and richest collections of trees and shrubs in Poland. From Wikipedia, the free encyclopedia.