In 1843, Prussian King Frederick William IV commissioned his royal garden director Maximilian Friedrich Weyhe to plan a public park for Altena's Burgberg. Weyhe wanted to embellish the bare rock in the style of English landscape gardens with promenade paths in elegant lines, with Aussichtspunkt Kahlen and plantings of avenue trees and groups of trees. Large areas on the slope towards the Nette valley were leveled, sown with lawn and supplemented with trees and shrubs. On the Lenne side, rugged rocky outcrops combined with trees and pathways repeatedly offered surprising views of the landscape. However, the park, which was completed in 1854, quickly became overgrown. It was partially reconstructed in 2015 and is now accessible again. Text panels provide information about the history of the park. In 2022, paths and steps were renewed, handrails and benches installed and a new children's playground built with the support of the state's "Heimatzeugnis" program.