Located in Somerset, England this three day festival is the largest open grass festival in the world with an attendance of over 175,000. Glastonbury Festival has been around since the 1970s with leading bands of the times, such as Led Zepplin headlining and making this a world renowned festival for years to come. Glastonbury takes place the last weekend of June and brings in headliners from many different genres including rock, progressive and alternative music.