The arrival in Malta of Caravaggio, who painted at least seven works during his 15-month stay on these islands, further revolutionised local art. Two of Caravaggio's most notable works, ''The Beheading of Saint John the Baptist'' and ''Saint Jerome Writing'', are on display in the Oratory of the Conventual Church of St. John. His legacy is evident in the works of local artists Giulio Cassarino (1582–1637) and Stefano Erardi (1630–1716). However, the Baroque movement that followed was destined to have the most enduring impact on Maltese art and architecture. The glorious vault paintings of the celebrated Calabrese artist, Mattia Preti transformed the severe, Mannerist interior of the Conventual Church St. John into a Baroque masterpiece. Preti spent the last 40 years of his life in Malta, where he created many of his finest works, now on display in the Museum of Fine Arts in Valletta. During this period, local sculptor Melchior Gafà (1639–1667) emerged as one of the top Baroque sculptors of the Roman School.