Nearly 700 historians from 70 countries came to Poznan to take part in the 23rd International Congress of Historical Sciences. This is the second time the congress is held in Poland. It is the largest and most prestigious meeting of historians from around the world. Since 1900, historians from around the world have been organizing their congresses to discuss the most pressing topics, present the results of their research and build international cooperation network.

In 1926 they established the International Committee of Historical Sciences (ICHS), as a non-governmental organization composed of national committees representing the member countries and specialist commissions devoted to specific research issues. The General Assembly of the ICHS on August 29th, 2015 in Jinan (China) decided that the 23rd International Congress of Historical Sciences will take place in Poznań, Poland on August 23-29, 2020. Unfortunately, due to the outbreak of the COVID-19 pandemic and the unsatisfactory progress in fighting it in most countries, the organizers were forced to postpone the Congress two times. Ultimately, the ICHS Board decided that XXIII Congress will be held on August 21-27, 2022.

During the Congress, the International ICHS History Prize (known as the "History Nobel Prize") was awarded for the third time. It was awarded to Professor Sanyaj Subrahmanyam, a specialist in economic history from the University of Delhi, then Oxford, University of California, Los Angeles and the College de France. Traditionally, the Congress was accompanied by the International History Book Fair.

The organizers of the Congress are the International Committee of Historical Sciences, based in Paris (CISH), the Committee of Historical Sciences of the Polish Academy of Sciences and Adam Mickiewicz University, Poznan.

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