Want to know what global warming and rising sea-levels will do to your neighbourhood? Alex Tringle has a rough-and-ready overlay for Google Maps which shows you. Note that the IPCC predicts that sea level will rise only 0.09 to 0.88 metres in the next century; the real worry is those "large-scale, high-impact, non-linear and potentially abrupt changes", like the disintegration of the West Antarctic Ice Sheet - something which is looking scarily more likely the more we learn. If that happens, then downtown Wellington will be under water, and you'll be able to go swimming in Cathedral Square.
As I said, this is a rough-and-ready overlay, which ignores all sorts of details. Alex's caveats are here.
[Hat tip: Crooked Timber]