Incorporated in 2001, Centennial is one of the state's newest cities, but being a part of the Denver metro area, it's hardly a small town. More than 100,000 people call Centennial home, yet the area is also known for its recreation trails and parkland. The 11-acre Centennial Center Park, 13133 E. Arapahoe Rd., features a water play area, a playground, a climbing wall, fountains, an amphitheater and a native plant demonstration garden; phone (303) 325-8000. Learn More...