The overall aim of the MINDMAP  project is to identify the opportunities offered by the urban environment for the promotion of mental wellbeing and cognitive function of older individuals in Europe. To achieve this, the project will advance understanding by bringing together longitudinal studies across cities in Europe, the US and Canada to unravel the causal pathways and multi-level interactions between the urban environment and the individual determinants of mental wellbeing in older age. The project will examine the causes of variation in mental wellbeing and disorders in old age both within as well as between cities and identify national and urban policies for the prevention and early diagnosis of mental conditions and disorders of older people. This knowledge will contribute to the establishment of preventive strategies in urban settings to promote the mental dimension of healthy ageing, reduce the negative impact of mental disorders on co-morbidities and preserve cognitive function in old age.