15 August 1483 August 14, 2015 Author: Staff Pope Sixtus IV consecrates the Sistine Chapel. Famous Words of Inspiration..."Go back a little to leap further." John Clarke — Click here for more from John Clarke Related posts: 15 August 1483 15 August 1914 15 August 1969 15 August 1939 31 May 1927 17 April 1964 Categories: History Tags: 1483, 15 August