A good activity for furnishing a hot after noon, a ride on the river. The guide, which is also the boss, turn on 4 for you, with English a bit difficult to grasp, but a contagious enthusiasm. The break in the garden is relaxing, and the discovery of interesting plants. Schedules are "flexible" because you only have to arrive between two towers so they put a road circuit. A few more details about the presented monuments would be a real plus.