The 8.3 acre park, named for long time resident George Osius, is a residents only facility. The lakeside park features an updated marina with docks to accommodate boats and yachts. Park amenities include tennis courts, basketball court, playscapes, swimming pool, wading pool, pavilions, picnic areas, lockers, restrooms and showers. The park landscaping is stunningly attractive and impeccably maintained.

In addition to the Park and Harbor, the City also offers other outdoor amenities including a seasonal ice skating rink and sledding hill. A fenced in dog area is located on the the Municipal Building grounds.