Arguably the transactional perspective in environmental psychology is essentially a post-modern approach, as the emphasis shifts from social and environmental 'givens' to examining how people (socially) construct their world and make sense out of it. This might be characterised as a distinction between 'meaning-taking' and meaning-making'. The urban environment is an important setting for such meaning-making: not only do we have a personal relationship with its past, but the collective urban memory over single and multiple generations also contributes to our understanding, attitudes and actions within the city. Heritage interpretation through, for example, museums, visitor centres, historical re-enactments and urban trails has become an important device by which people come to understand the past. The psychological models we use to tell the story of the urban past can have a profound impact upon what the past comes to mean.