Springfield. Remnants of a manufacturing economy remain in Springfield despite a dramatic de-industrialization in last quarter of the 20th century; for example, in 2011, Smith & Wesson relocated 225 new jobs to its Springfield headquarters, bringing its total manufacturing workforce in Springfield to over 1150. Chicopee's growth continues to be catalyzed by the growth of Westover Air Force Base, especially around Memorial Avenue. As of 2011, Holyoke continues to see rapid growth in its high-tech sector, featuring new enterprises that capitalize on Holyoke's abundance of green energy, e.g. water power from the Holyoke Canal System, the nearby Falls, and a proposed wind farm. All three formerly industrialized cities—Springfield, Chicopee, and Holyoke—continue to face typical urban problems, such as gang activity and the drug trade in increasingly isolated parts of each city; however, these activities have lessened significantly during the past 20 years and a spirit of revitalization now pervades each city. Westfield's formerly moribund town center is in the midst of receiving a dramatic makeover, replete with 60-foot clock tower—scheduled to be completed in 2012. Nearly all other towns and villages in Hampden County are either wealthy suburbs (e.g. Longmeadow, Massachusetts, Wilbraham, Massachusetts), or rural exurbs, (e.g. Palmer, Massachusetts and Brimfield, Massachusetts). Hampden County also features numerous natural retreats like the Mount Tom and Mount Holyoke Ranges. In this Hampden County, tourism is very popular. Six Flags New England features the No. 1 roller-coaster in the world ("Bizarro") and draws tourists from all over. Similarly, the Basketball Hall of Fame, a shrine to the world's 2nd most popular sport, invented in Springfield, draws hundreds of thousands of visitors per year. Other major tourist attractions include Western Massachusetts' only national park, the Springfield Armory National Historic Site. The Quadrangle in Springfield features five museums of varying themes, including the United States' first planetarium, gathered around the whimsical Dr. Seuss National Memorial Sculpture Garden. Forest Park (Springfield) designed by Frederick Law Olmsted (of NYC's Central Park fame) is one of the largest urban parks in the United States at . During the holiday season it features a nationally renowned light display called "Bright Nights". The New England States' collective state fair, The Big E, is held each September–October and generally draws millions of visitors. Springfield's "Parade of Big Balloons" takes place on November 1 each year, borrowing many of the balloons from Macy's Thanksgiving Day Parade and attracting 100,000 spectators. Each July,