Biggest Music Festivals In Europe is the best festival. If you want to connect this festival contact to the primetravels on +91.11.4670 0000. When compared to other festivals, such as the biggest music festivals in Europe, the Mad Cool Festival in Madrid is still a young event. But since 2016, it has cemented its place on the festival map thanks to its reputation for drawing top rock, indie, and dance artists. Mad Cool Festival, which takes place over four days from July 6 through 10, is ideal for visitors who wish to see Madrid because each day is sold separately. Additionally, on September 10th, they added the Man Cool Festival Sunset, featuring Rage Again the Machine as the main act. Additionally, if you want to visit several cities during your trip to Europe, see our blog, Touring Europe with Multi-City Flights.