Join Centennial for its annual summer event, and formally open the city’s first park, which opened in April. The day will begin with the screening of We Bought a Zoo and continue with a variety of fun activities including face painting, an inflatable castle, interactive games, live music, and plenty of food. The Disney Road Crew will stop by with games and prizes. Don’t leave before dark as the fun caps off with a full-blown fireworks display at sundown. Sat noon.