Yamanakako Autumn Leaves Festival is held at Asahigaoka Lakeside Green Park on the shore of Lake Yamanaka. It focuses on the autumn foliage around the lakeside, with illumination after dark adding a different atmosphere to the visit.
The event is a seasonal opportunity to spend time along the lake rather than a formal stage programme. Conditions change from year to year according to the weather, so the foliage should not be assumed to be at its peak throughout the full event period.
The park is in the Asahigaoka area of Yamanakako. Visitors planning an evening visit should check the official local information for any final details before travelling.
Official source: Yamanakako official tourism events ↗