 The Royal Highland Centre (RHC) now welcomes over 1 million visitors annually to a wide range of events.The largest event is the Royal Highland Show, which attracts over 200,000 visitors each year.The future of the Royal Highland Centre was threatened by the proposed expansion of Edinburgh Airport in 2006 under a UK government white paper, which foresees the need for the Royal Highland Centre site to be used for airport use by 2013.