Tuffeau – Pierre de lumière is an informational resource devoted to tuffeau, the soft, pale limestone that gives much of the Loire Valley its distinctive cultural and architectural character. The site explains the stone’s geological background and extraction, and highlights its use in the region’s built heritage, from celebrated castles and abbeys to historic towns, villages and troglodyte dwellings. It also presents examples of projects and restorations, helping visitors understand how tuffeau continues to shape and preserve local architecture.

For people seeking practical expertise, the site provides a directory of professionals, alongside contact information and a newsletter. Its coverage places the stone within the wider landscape of the Loire Valley, a UNESCO World Heritage cultural landscape shaped by the river, stone, gardens, and wine-growing traditions. By bringing together educational material, restoration examples and professional contacts, Tuffeau – Pierre de lumière serves as a guide to the material and its enduring role in the identity of the Loire region