Sonisphere is a traveling music festival that primarily focuses on rock and heavy metal genres. It was first held in 2009 and quickly gained popularity, featuring a mix of established and emerging bands. The festival has taken place in various countries, including the United Kingdom, France, and Spain. Each year, Sonisphere showcases a diverse lineup, often including iconic acts like Metallica, Iron Maiden, and Slipknot. The festival is known for its energetic atmosphere, attracting fans who enjoy live performances and the camaraderie of fellow music lovers.