The Church of the Val-de-Grâce is a Roman Catholic church in the 5th arrondissement of Paris, in what is now the Val-de-Grâce Hospital. The edifice was formerly a royal abbey, and its dome is a principal landmark of the skyline of Paris. The church was initially designed by François Mansart, succeeded by Jacques Lemercier who designed the Saint-Sacrament chapel's spiral-coffered dome after Philibert de L'Orme's chapel at the Château d'Anet.