Chicago Cultural Center — Free Events

You'll walk under the world's largest Tiffany glass dome—seriously, it's absurdly gorgeous—while catching live concerts, experimental performances, or diving into rotating art exhibitions that actually make you think. The Loop's grandest civic space does free programming year-round, so Sunday's your chance to explore without the crowds or dropping a dime. All ages, completely free, and the kind of cultural moment that reminds you why Chicago's got serious architectural game.