The rustling of the wind through trees has replaced the referee's whistle at a football stadium in the Austrian city of Klagenfurt. Almost the whole pitch of the 32,000-capacity Woerthersee stadium, which hosted some of the fixtures of the Euro 2008 tournament, has been covered in 300 trees. The installation, entitled "For Forest", was opened to the public on Sunday for a few weeks of bucolic wandering.
