sentences:  Under Mérimée's direction, the first efforts to restore major Gothic monuments began.In 1835, the church of Saint Séverin in Paris was among first to undergo restoration, followed in 1836 by Sainte-Chapelle, which had been turned into a storage house for government archives after the Revolution.The restoration of Saint-Chapelle as led by Félix Duban with Jean-Baptiste Antoine Lassus and a young Eugène Viollet-le-Duc.