18 April 1506 April 17, 2015 Author: Staff The cornerstone of the current Saint Peter’s Basilica is laid. Famous Words of Inspiration..."Failure is blindness to the strategic element in events; success is readiness for instant action when the opportune moment arrives." Newell D. Hillis — Click here for more from Newell D. Hillis Related posts: 21 April 1506 18 November 326 18 April 1983 18 April 1983 18 April 1983 Categories: History Tags: 1506, 18 April