Book excerpt: A photo-led coffee-table compendium of 50 buildings and structures that have helped to create the Wales we know today. Written by architectural historians Greg Stevenson and Mark Baker, with images by acclaimed photographer David Wilson, the book explores the idea of identity as expressed through a nation's "bricks and mortar." There are even a couple of buildings outside of Wales, a couple that have been lost, and one that moves every year to a different location.