Fountain Lakes Commerce Center is 500 acres of mixed-use development with amenities designed to enrich those who reside and work in the surrounding community. The amenities include approximately 150 acres of adjacent land donated to the City of St. Charles for public recreational purposes. As the second largest park in the county, it includes 80 acres of stocked lakes, a wetland observation area and a seven-mile running trail that will connect the recreation area, business park and Mueller soccer fields.