Lollapalooza is a Day music festival happening Aug. , at historic Grant Park in Chicago, Illinois, USA..Lollapalooza llpluz is an annual music festival featuring popular alternative rock, heavy metal, punk rock, hip hop, and electronic music bands and artists, dance and comedy performances, and craft booths. It has also provided a platform for non profit and political groups and various visual artists. Conceived and .Lollapalooza, Chicago, Illinois. .M likes. Lollapalooza will happen once again in historic Grant Park, Chicago, IL on August , . Get on the . Lollapalooza, the juggernaut of Chicago music festivals, has arrived at a crossroads for the first time since landing in Grant Park in . Four day p.es for Lollapalooza, Aug. with headliners including the Weeknd, Bruno Mars and Jack White, were still available Sunday morning five days after . Something strange was happening mid afternoon Tuesday Lollapalooza tickets were still on sale, more than five hours after they became available for the annual festival Aug. in Grant Park. In past years, four day tickets which account for percent capacity of the festival, which typi.y attracts .