City Walks is a popular series by Chronicle Books. Each set has 50 cards of walking tours in a box. This means you dont have to take everything out with you but can choose the areas you want to explore together. A deck of 50 walks that guide adults with children age 5 & up through the best kid-friendly attractions the city has to offer. Each card outlines a self-guided walking adventure with an illustrated map on one side & insider information on the other.