Wartbergpark is part of Stuttgart's linked green spaces, a hillside park where paths, lawns, views, and public sculpture break up the city's dense north side. It is especially useful if you are walking the Green U route between Killesberg and Rosensteinpark.
The park is not a headline sight, but Stuttgart rewards this kind of urban walking. Use it to connect bigger stops, and pause for the view back over a city that often hides its shape in folds of hills.