Hidden treasures for everyone!

See and review the Lyonnaise architecture but including the use of a particular rock: that is the purpose of this little booklet! Some organizational flaws in the layout but as it reads quickly: we forgive him! Initially generalities on the rocks used in buildings (St John Traboules and limestones Gryphées, ammonites Courthouse, limestone ..) After using the guide, and site visit on site by following the proposed route: the geology of old Lyon has no secrets for me!