This is a course about visualization concepts in which the students should learn how to effectively design visualizations. To reach this goal, we focus on one specific data set and scenario from which the students design and implement a visualization tool. In addition, the development of professional skills is an important aspect of this project. Each group of at most 5 participants specifies, designs, and actually builds a visualization tool. Each group must document the implemented code and also report on the activities that are typically motivated by weekly assignments. Each project is concluded with a presentation (screencast) and a written final report.