The Saint-Irénée church is open daily from 8:30 am to 6:00 pm.: illustrated panels allow for auto-visits. The crypt is open every Saturday, except in August, from 3:00 pm to 5:00 pm. Guided group tours are available on request. The church is built on an important Gallo-Roman necropolis where the two martyrs, Alexander and Epipode, were buried in 178 according to tradition. The crypt housed their remains and those of St. Irénée, second Bishop of Lyon after the martyrdom of Pothin in 177.