Covering the next hill along from the castle, this 23-hectare expanse of mature oak and lime forest is a wonderful place for a leafy stroll. Although there probably was a sacred oak grove here in ancient times, the forest has been clear-felled on several occasions, most recently in around 1800.
On an expanse of lawn near the southern end is Okaskroon (Crown of Thorns), a memorial to locals deported to Siberia during the Soviet era. Deeper within the forest there's a small German military cemetery marked by triple sets of crosses set between the trees.