Post Bellum is a Czech educational nonprofit organization based in Prague. The organization was formed in 2001 by a group of historians and journalists with the aim of increasing public knowledge of the 20th century history of the Czech Republic and neighboring countries, especially among younger generations. Post Bellum has collected thousands of witness accounts by conducting interviews with people who lived through significant periods in history as part of their documentation project, Stories of the 20th Century, and for their online archive, Memory of Nations. They organize various other projects and activities to raise awareness of modern history. The stated aim of the organisation is to "understand the past through authentic testimony". Post Bellum is an associate member organization