The earthquake sequence that struck the city of Christchurch and surrounding Canterbury region in 2010-2011 has had unprecedented impacts in all spheres of New Zealand society. The Canterbury earthquake sequence had many geologically remarkable characteristics, with ramifications for all aspects of life in the region. To commemorate the anniversary of the most devastating, M6.3 Christchurch earthquake of February 22, 2011 CREW highlights some of the key lessons which can be found here.