This is a third, revised edition of a very successful, introductory-level geology guide. In it, the author has taken the opportunity to revise and update the text, and to substitute improved illustrations for some of the old ones.

The Geologists’ Association is making something of a name for itself when it comes to pushing the envelope in geological publishing in the UK. It has already produced guides to the geology of non-UK locations and I have reviewed a new guide to the roadside geology of Wales. In itself, that was quite a departure, but so is the book under review – a guide to the ‘urban geology’ of Barcelona.