The visits will take place by coach, leaving Nantes at about 8 am and returning at about 4.00 pm.

Each programme includes about 5 stops which, depending on the type of visit, will each last between 30 minutes and 1 hr 30.

Commented visits will include green infrastructures that are remarkable either due to the architecture of the building itself, the technical design, the type of the planting (extensive, semi-intensive, intensive, from 300 to several thousand plants per square metre).

Each programme also includes, wherever possible, one or more stops on sites that illustrate particularly well the links between mineral and vegetable, city and nature, to echo the themes of the talks given over the previous two days.