Adopted by the Constituent Assembly of ICOMOS in Warsaw (Poland) on 22 June 1965 and amended by the 5th General Assembly (Moscow, USSR) on 22 May 1978, the 18th General Assembly (Florence, Italy) on 12 November 2014, the Extraordinary General Assembly (New Delhi, India) on 12 December 2017, and the Extraoridnary General assembly (Bangkok, Thailand) in October 2022.
The Rules of Procedure for the General Assembly were revised, following the entry into force in January 2015 of the amended Statutes adopted by the 18th General Assembly (Florence 2014). The new Rules of Procedure were adopted by the Extraordinary General Assembly (New Delhi, India) on 12 December 2017, and revised at the 2019 Annual General Assembly (Marrakesh, Morocco) and at the 21st General Assembly (Sydney, 2023).
These Ethical Principles were adopted by the 18th General Assembly (Florence, Italy) on 12 November 2014 to replace the Ethical Commitment Statement adopted by the 13th General Assembly (Madrid, Spain) in 2002, and revised by the 20th General Assembly (via Zoom) on 7 December 2020.