One of the crown jewels of Chicago architecture, this Frank Gehry designed bandshell in the middle of Millennium Park is easily one of the most beautiful public spaces in the country. It looks like a mountain of curved stainless steel panels stretching into the skyline with crisscrossing arches enclosing the field. It is a great spot to catch a free concert in the summer or just eat lunch in the park with the Chicago Symphony Orchestra as the soundtrack.