Data Walking project (http://datawalking.com/) explored the potential of walking to gather environmental data and through multiple walks and visualisations build a rich picture of that area. It examines technology and tools for creative data gathering and experimenting with data visualisation, to create tools, gain insight, and share knowledge. In this 30-minutes talk, David discussed the approach, activities, and outcomes of the project, look forward to the future, and encourages questions, suggestions and ideas for collaborations.