Horticulturist and broadcaster Monty Don visits some of the most famous and interesting gardens in France, beginning by examining the stories behind important historic ones and seeing how throughout history they have been used as a public expression of money, power and passion. Among those featured are elaborate walled gardens designed to please the mistress and then the wife of a king, magnificent displays of flowers and fountains that incited violent jealousy in another monarch and a modern-day chateau plot that came close to bankrupting its owner.