There was a festival going on which involved a lot of flowers, especially inside the cathedral, where there were beautiful floral displays all along the outer walls and up the middle aisle.
Christchurch Cathedral with floral carpet
They had people circulating through the church looking at the flowers, but I could only stay a few minutes. I suspect that my pictures from inside won't turn out...
Christchurch Cathedral, stained glass panel and memorials (above)