6. Carnegie Science Center
Address: 1 Allegheny Ave., North Shore
Mac Says: "I went to the Science Center a few times when I was really young, because I was in the gifted program. Being in that, you'd get to take creative classes. We'd go to the Science Center a lot. When I got to high school, I started going again, to see the Pink Floyd laser-light show. We'd get stoned and drive over."