At the foot of the Fourvière hill in the heart of Old Lyon, the Primatial Saint-Jean-Baptiste is better known under the name Saint-Jean-Baptiste Cathedral or Lyon Cathedral. It is the church of the Archbishop, who is still Primate of the Gauls. Built on ancient churches whose ruins still exist, the present cathedral dates from the 12th century and has been modified over the centuries.
Its gothic naves, Roman choir, and side chapels bear witness to these successive additions, like its nine-metre-high astronomical clock, which dates from the 14th century.
Its facade is an iconic setting for the Festival of Lights held each year in December.