Can we just build walkable towns?

For the last year I’ve been living in the small city of Puerto de la Cruz (PDLC) in Tenerife. PDLC is an interesting place for a number of reasons, but one of those reasons is that fact that it’s not very big. The city has a population of ~30k people in an area of 8.73 km² according to wikipedia . Because of this, its really not that hard to walk around the city, as long as you avoid walking in…