Get your tickets to see a game at Silesian Stadium. If there's nothing happening while you're there, you might like to check if the stadium offers a tour of the facilities.
You'll have sightseeing choices galore when staying in Chorzow. Silesian Stadium is a great place to start here, but there are many other worthwhile places to explore. Spodek, Silesian Museum, and Kosciuszko Park are not far from the sporting facility and will fill in your day nicely.