irritability and decreased sensitivity to interpersonal cues. As the incidence of mental illness continues to rise, there is growing evidence that exposure to natural environments can make a significant contribution to health and wellbeing. Mounting evidence shows, that exposure to nature contributes to physical and psychological wellbeing, such as the review carried out by Louv, that found evidence of "nature-deficit-disorder" in children, which suggests that the importance of being able to engage with restorative environments applies across a wide age range. Others report that natural tranquil surroundings have profound physiological effects on people suffering from stress. For example, Ullrich found that stress (as measured by blood pressure, muscle tension and skin conductance response), induced by showing videos of workplace injuries, improved significantly quicker following further viewing if videos included natural surroundings rather than busy traffic or shopping scenes. A recent study has demonstrated the benefits of simulating such environments for pain relief during bone marrow aspirate and biopsy. Economic Since seeking tranquillity is an important reason why many people visit the countryside, the presence of tranquil areas helps boost rural tourism. Since rural tourism in the UK directly supports 380,000 jobs and £13.8 billion annually to the economy, and a recent survey showed that tranquillity is the main reason why 49% of visitors go are attracted to the countryside, one can conclude that tranquillity is worth 186,200 jobs and £6.76 billion a year to the economy. Tranquillity research Natural settings that effortlessly engage our attention are typically associated with soft fascination and with the analysis of tranquillity and preference published by Herzog and Bosely (1992). In this study, the authors attempted to distinguish empirically between the constructs of tranquillity and preference as affective qualities of natural environments. Motivated by ART, from which they took tranquillity as a reasonable term to describe soft fascination, they produced definitions for each component. Tranquillity they defined as "how much you think this setting is a quiet, peaceful place, a good place to get away from everyday life", and preference as "how much you like this setting for whatever reason". Subjects were asked to score the following visual settings: mountains, deserts, fields / forests and waterscapes against the two target variables, tranquillity and preference, and four descriptor variables: mistiness, unstructured openness, focus and surface calmness. Tranquillity and preference were positively correlated across all settings with tranquillity scoring higher ratings in the field / forest, waterscape