This tourist circuit celebrates water through the ages by discovering the Haute-Lay and its history. Lay-Saint-Christophe is nicknamed the village of a thousand fountains. It is also the birthplace of Saint Arnou with his illustrious descendants. Walking through its old streets allows you to discover many fountains and admire the Renaissance buildings (the Samaritaine, presbytery, priory whose most illustrious religious was Dom Calmet, etc.), Art Nouveau (Antonin Daum's house). A walk full of interest!