Almost 500 acres of multi-use trails; Off-Leash Dog Area; fishing lakes; picnic shelters; and Astronomy Viewing Area located on Schwede Rd south of O'Fallon, MO. Broemmelsiek Park offers first class astronomy viewing area with 10 concrete viewing stations equipped with electrical service to accommodate the latest telescopes. The site is open on a first-come, first-served basis and serves as the primary location for fun weekly stargazing opportunities.