On June 29, 2011, concurrent with the anniversary of the gas attack on the city of Sardasht in 1987 and the Day of Campaign against Chemical Weapons, the new building of the Tehran Peace Museum was officially opened for public.[5] during the ceremony, a number of guests from different countries, including the director of Hiroshima peace museum,[6] a delegation representing the survivors of Hiroshima atomic bombing, survivors of chemical weapons attack from Halabja, Northern Iraq, as well many Iranian activists and war veterans attended.[7]