Historical clue formulations

• Where "the hills are alive" in song — 2025-07-06
• Alpine land — 2013-08-21
• Mozart's birthplace — 2010-04-25
• 1964 and 1976 Winter Olympics host — 2010-01-31
• Wienerwald's whereabouts — 2009-08-15
• Where Schwarzenegger was born — 2008-07-15
• Home of the von Trapp family — 2007-12-10
• Waldheim was its head — 2001-09-02
• 1976 Winter Olympics host — 1997-01-24