Mexican Fiesta has called Henry Maier Festival Park home almost as long as Summerfest has. Starting on the south side in 1973, the fiesta moved to the lakefront grounds in 1977. The longstanding event is rooted in pillars of community, education, Mexican heritage, and cultural advancement. That’s cool and all, but we’re all about the delicious food and the jalapeño-eating contest. (Through August 25.)