Barcelona's magical fountain is the largest in Europe and the second-largest fountain in the world. This fountain was a project of the 1929 Barcelona World Expo project. But it has been well maintained since the Expo and is now one of Barcelona's most popular attractions. The fountain has 3,620 water spouts, 8 colors for conversion, and 4,760 illuminators. It is these hardware technologies that create a dream with water and light. Every summer night, when the fountain starts the light show, it will attract many tourists who stop and watch, bringing a lot of happiness to everyone. Looking at people's happy expressions, you will feel that watching such a show is also very satisfactory.