Saint-Louis-des-Invalides Church (including the Soldiers' Church and the Dome's Church) houses the graves of the governors of the Invalides, and also many Marshals of France and commanding officers'graves.
The organ was built between 1679 to 1687 (with the participation of Louis XIV's joiner) and has been restored in the 50's. Mass is still often celebrated, especially on the anniversary of Napoleon's death and on the anniversary of the Invalides Mansion foundation.