A local attraction is the Christchurch Gondola, which wasn't bad, but it's a 30mn bus/shuttle ride away: it gives you an elevated view and the option of what looked like a not so stellar hike in high sun, so we ended up skipping that and only spent 1H to get the next shuttle back:
They have a back in time tunnel ride which was ok-ish:
We then had a bit of time left to go through a half hidden science museum: Rutherford's Den in the old university. It was actually quite good and I wish it had been easier to find so we would have scheduled more time for it.
And then, it was time to fly back. I ended up in an AirNZ flight after my United flight was cancelled due to engine trouble before takeoff:
[rigimg:1024:702*|got a "free" stop in LAX, which I usually try to avoid :)]