Smart cities have led us to collect a huge amount of data every day. Interpret and extract some meaning about these data is a major issue to solve. Big data visualization techniques can be used to present the data in a graphical/visual way allowing one to grasp its characteristics or identify new patterns. Tallys’ research intends to develop a Big Data Visualization service integrated within InterSCity platform that will provide reusable visualization mechanisms to support the development of Smart Cities applications.