Eglise souterraine Saint-Jean - Journées Européennes du Patrimoine

Let us guide you through this mysterious place and soak up the atmosphere that emanates from its walls, steeped in history… Come and discover a new trail exploring the site’s geology, complete with a map and information points throughout your visit! The Saint-Jean underground church was dug into the rock probably at the beginning of the twelth century, following a Roman layout. It is unique in Europe, being of exceptionnal proportions, 20 meters high and having a reliquary, a cross-shaped pit for relics, an impressive gallery at 18 meters above floor level and a necropolis containing about one hundred and sixty-nine sarcophagi makes it well worth a visit.