I knew their was a 3D feature of Google maps, works for all (???) of New Zealand, but Christchurch's is amazing!
Use "ctrl" plus mouse to move, and scroll wheel to zoom
Here's a screen show of Christchurch hospital.
A great way to visualize empty lot topography for building: steep up hill, flat-ish, ...
1) Click "Satellite" button
2) Click "3d" button
https://goo.gl/maps/rwGFcrRuExC2
