Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsVisual History of the World's Tallest Buildings Using Entitieshttp://demonstrations.wolfram.com/VisualHistoryOfTheWorldsTallestBuildingsUsingEntities/]]>http://demonstrations.wolfram.com/VisualHistoryOfTheWorldsTallestBuildingsUsingEntities/