A few metres from the memorial to civilians killed in war, just across St Michael’s Avenue, are two Japanese oak trees. They were planted by Yoko Ono when she opened the city’s peace month on 14 October 2005. On 15 June 1968, John Lennon and Yoko Ono had planted two acorns for peace in the Cathedral grounds. They were planted in easterly and westerly positions, symbolizing the meeting of the couple and the union of their two cultures. This was the first of many peace events that the couple would initiate throughout their lives.