Mosaic 1 in Notre-Dame de Fouirvière

View of a colorful mosaic depicting the Third Ecumenical Council that was held in Ephesus in A.D. 431.

That council declared the Virgin Mary as "Theotokos"—the "God-bearer."  The Basilica of Notre-Dame de Fouirvière that is located in Lyon, France is dedicated to the Virgin Mary.

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The basilica was built between 1872 and 1896.  The basilica occupies the site of what was once the Roman Forum of Trajan in Lugdunum (latin: forum vetus [old forum]).  The name was inverted and corrupted to the French Vieux-Forum.

The Wikipedia article can be found Here.