Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The world''s largest indoor ski area is SnowWorld, Landgraaf, Netherlands with a total of 35,000 m² of snow. In 2003, the first indoor snowboard FIS WorldCup contest was held in SnowWorld Landgraaf. The world''s longest indoor slope with 640 m is in the AlpinCenter in Bottrop/Germany and the world''s first indoor black diamond with a 31 percent grade is in the SnowFunPark in Wittenburg/Germany. In November 2007 Chill Factore designed by FaulknerBrowns Architects opened in Manchester, UK making it the worlds widest slope at 100m at the bottom. In autumn 2009 construction started on a fourth 300 metre ski slope at SnowWorld, Zoetermeer, Netherlands.