Since the recent post, where I only included True Color Imagery using Sentinel-2 data, providing an overview of some major cities, I thought it might also be interesting to extend those examples so we can have a look at the vegetation around (and also inside) of the cities. We can use a simple Normalized Difference Vegetation Index (NDVI) that is computed like so: $$ NDVI = \frac{NIR - RED}{NIR + RED} $$