This chapel is part of the estate of Villa Fiorentina, a famous Italian-style villa dating from the end of the 19th century and one of the residences that "made Cannes' reputation". The Baroque chapel was built at the request of Count Vitali, whose coat of arms adorns one of its walls.
http://www.cannes-destination.com/Cannes/PCUPACA06V50056J/Chapelle-Bellini-et-Parc-Fiorentina