17 gardens
Hertfordshire is just north of London and has a number of great estate gardens which belonged to powerful families. The most important of these gardens is Hatfield House Garden. It has the finest late-renaissance garden in Hertfordshire and perhaps the finest in England. Also, at Ashridge, Hertfordshire has a fine example of Humphry Repton's garden design theory. St Paul's Walden also has an important place in garden history, as an example of the Forest Style (occupying a transitional place between the Baroque and Landscape styles of garden design).