I think these gardens are more about the views than the plants. The sculptured bushes and hedges are wonderful too see, but there is little variety in plant type throughout the garden. The walk is extensive and easy, though about 6km if you do it all. There is a little car that will bring tired walkers back to the chateau area. The views are fabulous so make sure you walk to all the viewing areas. The cafe is not too expensive and is situated beautifully for admiring the valley and town below. A good range of gifts in the gift shop if that interests you.