sentences:  With time on his hands, Charles III now devoted his time to completing the restoration of his palace begun by his uncle Honoré V. He rebuilt St Mary's Tower ("Illustration 14") and completely restored the chapel, adding a new altar, and having its vaulted ceiling painted with frescoes, while outside the façade was painted by Jacob Froëschle and Deschler with murals illustrating various heroic deeds performed by the Grimaldi.The Guard Room, the former great hall of the fortress (now known as the State Hall), was transformed by new Renaissance decorations and the addition of a monumental chimneypiece.Charles III also made serious attempts to find the various works of art and furniture looted, sold and dispersed during the revolution.