European City Cards: A Vibrant Project The City Card group has been one of the most active groups in European Cities Marketing for several years.  In the past couple of years, the City Card project has gained more and more members as cities look to develop City Cards and participate in the City Card project: to date, 33 cities have chosen to take part. The focus of the City Card group is to raise awareness of city cards in Europe, by pooling knowledge and by developing consumer tools that focus on city cards as an attractive tourism product.