The temple builders drove sharpened oak piles into the loamy soil to secure the ground for this heavy building.[3] The temple was Gallo-Roman with a classic-Italic main front placed on a monumental podium.[4] On the ruins of the Roman temple a Christian church was built in the twelfth century. The church was in a bad state when it was demolished in 1892 and rebuilt as a Neo-Romanesque building between 1893 and 1898.[3] In the course of the digging Roman walls and wall fragments of preceding church buildings were discovered and included in the construction of the new church.[3] In the previous church's tower six 14th-century frescoes were discovered which are now in the choir of the present church. They show a so-called Dance of the Dead where living and dead meet.