This report provides a synopsis of the implementation of the WP4, Task 4.4.3. City Day: Discovering my City - Healthy and Clean Tips in Amsterdam, Ljubljana, Sosnowiec, Aveiro and Liguria Region. This report follows the D.18 City Day - First City (Bristol). The activity is based on the concept and design, developed by the REC, for a ‘City Day’ event: Discovering my City - Healthy and Clean Tips. The topic of the activity is smart, non-motorised mobility of citizens in Europe to show the walking and cycling routes of the city. The activity invited older citizens from the cities to promote their own smart mobility. Short films were prepared about the smart mobility tips which show the health, environmental and social benefit of the smart mobility in the city. The REC provided guidelines and some templates, which described the general concept of organising the ClairCity Film Campaigns, culminating in the City Days. Based on this information the project team of the city adapted the methodology to their specific circumstances and implemented the campaign for filming and the City Day event.