Commemorations are taking place on the 599th anniversary of the execution of Bohemian church reformer Jan Hus in Constance, Germany, in 1415. July 6 is a national holiday in the Czech Republic. A sermon will be read in the Bethlehem chapel in central Prague, where Hus preached, with events taking place at his birthplace, Husinec, and at Constance. Hus was tried and burnt at the stake for alleged heresy against the Catholic Church, where a new exhibition about him has been prepared. The main target of Hus’ attacks were the sale of indulgences and corruption in the Catholic Church. Religious wars followed the execution as Hus’ followers attempted to safeguard their religious beliefs.