Hardwick is open to the public. It has a fine garden, including herbaceous borders, a vegetable and herb garden, and an orchard. The extensive grounds also contain Hardwick Old Hall, a slightly earlier house which was used as guest and service accommodation after the new hall was built. The Old Hall is now a ruin. It is administered by English Heritage on behalf of the National Trust and is also open to the public. Many of the Old Hall's major rooms were decorated with ambitious schemes of plasterwork, notably above the fireplaces. Remarkably, impressive fragments of these are still to be seen (protected by preservative coatings and rain-shields), though most of the building is unroofed.