A Pattern Language - Town Patterns

Christopher Alexander, an eminent architectural theoretician, published  A Pattern Language in 1977.  I dusted off my old copy, compared it with The Townlet and found 45 relevant patterns with several others at the margins.  The patterns are organized in three broad categories Towns, Buildings and Construction.

The Townlet is based on design of Pienza, a small Tuscan town that evolved organically from the work of Alberti and Corsollino in 1459 to its present state as a healthy 21st Century town.  The 1459 town plan remains viable after more than 500 years.

The following connects the Townlet with the relevant 18 Town Patterns.  Interesting comparison.