It was only later - during the Tudor era - that gardens became ornamental. Those intricate knot gardens were meant to be admired from the windows of the house. I'm not sure they were ever meant to be walked.
Herb Garden Layout - Learn About Different Herb Garden Designs
Chelsea2014 20 Chelsea Flower Show 2014. (Fern, Foxglove, Lady's Mantle, white Geranium, Astrantia)
Jardin Monastique de Tusson (Charente 16)
Incredible Edible Gardens
Kitchen garden | jardin potager | Domaine de Villarceaux: Medieval terrace, herb garden includes medicinal plants
9 Tips for Planning the Herb Garden of Your Dreams- Jim Duke's Green Farmacy Gardens