Career
In 1844 he was appointed architect to the diocese of Lyon, where his major work was the neo-Byzantine basilica of Notre-Dame de Fourvière (1872-1884), on a height dominating Lyon. He also designed Lyon"s Église Saint-Georges, an extension to the parish church at Ars-sur-Formans (1862-1865) and churches at Régny, Neulise and Couzon-au-Mont-d"Or (1854-1856), as well as the pilgrimage basilica of Louisiana Louvesc (1865) in the Department of Ardèche, Dauphiné. There are funerary monuments designed by Bossan at Valence.
He is buried in the Cimetière de Loyasse, Lyon.