Germany
The Luisium is an English landscape park, which continues into the meadows of Mulde and Elbe. Small palace (rather a villa). Admission to the park is free (beware of boars.), to the palace: May to Sept: Tue-Sun: 10:00-17:00, admission €4,5; with a guided tour only.
Listen to the audio guide for Luisium Free on WIP — starts by itself when you arrive, even with the screen off