Leaning against the natural slope of the land, the museum is set in a forest with various species (pine, oak, birch, charms, hazel, acacia, etc.) and dotted with sandstone chaos. This picturesque natural site belongs to the forest of Nemours-Poligny which itself is a southern extension of the forest of Fontainebleau. Completed in 1980, the rough concrete and glass building is the work of architect and urban planner Roland Simounet. The museum tour is chronological. The rooms, distributed around patios-gardens presenting the flora of the different periods of Prehistory, are largely open to the outside by large windows.