1972

• Uruguayan Air Force Flight 571

• C
• Smalltalk

Spain

• Castle of the Bishops of Sigüenza become Parador Nacional

Timeline: 1820, 1833, 1843, 1874, 1904, 1912, 1913, 1928, 1947, 1968, 1970, 1971, 1973, 1974, 1976, 1978, 1979, 1981, 1983, 1984, 1985, 1986, 1987, 1988, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, wikipedia:Timeline of scientific discoveries