Step 1 : Introduction to the question "Which U.S. city is home to Lollapalooza’s annual summer music festival?"
...Lollapalooza takes place in Chicago’s historic Grant Park, where Lake Michigan and the downtown skyline provide a striking backdrop for four days of live music. Originally a touring festival that traveled from city to city, Lollapalooza established its permanent Chicago home in 2005. Today, the event brings together major stars and emerging artists, drawing hundreds of thousands of attendees to the city’s lakefront. Its outdoor performances and downtown park setting make it a signature Chicago summer celebration.