Amazing animations showing how smart growth can improve streetscapes across America by adding greenery, slowing auto traffic, and applying smart growth principles of walkable streets, in-fill, mixed use, public plazas, and adaptive resuse.
You can search dozens of cases by map, by community type (urban, suburban, exurban, rural), by site type (avenue, highway, greyfield, etc), and by the type of improvement. The site is from the National Resource Defense Council.
The extremely visual nature of this site shows the steps that can transform common streets into extraordinary new places.
Picturing smart growth, from NRDC
Tokyo Green Space 