Chaumont castle (and its drawbridge) seen from the castle's park, March 2006.
In addition to the park and the castle itself, visitors have access to the stables and other out-buildings that have been renovated as spaces for art and photography exhibits, specialized gardens (herbs and vegetables, for example), and a tropical plant greenhouse. There's also a café on the grounds for a quick drink or longer lunch. The big attraction at Chaumont every year is the international garden-as-art festival from spring through fall. It's worth a visit if you're in the area.