Wikipedia
Saint-Louis-du-Louvre, formerly Saint-Thomas-du-Louvre, was a medieval church in the 1st arrondissement of Paris located just west of the original Louvre Palace. It was founded as Saint-Thomas-du-Louvre in 1187 by Robert of Dreux as a Collegiate church. It had fallen into ruin by 1739 and was rebuilt as Saint-Louis-du-Louvre in 1744. The church was suppressed in 1790 during the French Revolution and turned over the next year for use as the first building dedicated to Protestant worship in the history of Paris, a role in which it continued until its demolition in 1811 to make way for Napoleon's expansion of the Louvre. The Reformed congregation was given l'Oratoire du Louvre as a replacement and saved the choir stalls from Saint-Louis-du-Louvre which are still in place at l'Oratoire.