Built in 15 B.C., the Theatres Romains de Fourvière are the ruins of three ancient Roman sites, including a theater, a smaller theater and a temple located on the hill of Fourvière. It's also the site of the ambient Nuits de Fourvière, an annual performing arts festival that takes place during June and July. 

Recent visitors recommended tacking on a visit to the Theatres Romains de Fourvière after visiting the Basilique Notre Dame de Fourvière, since it's located on the walk down. Others remarked that the acoustics are amazing, and the view of surrounding Lyon is spectacular. However, some were disappointed with the limited signage. You'll find a museum next to the ruins, but all of the information is written in French. Consider reading up on the site or hiring a tour guide if you want a richer experience. 

The ruins are free to visit and are open daily from 7 a.m. to 7 p.m. Visitors will find this attraction south of the Basilique Notre Dame de Fourvière.