It’s hard to convey the full horror of the world’s worst nuclear accident, but the Chornobyl Museum makes a valiant attempt. Displaying the identity cards and photos of those killed in the aftermath of the explosion of Chornobyl power plant reactor No 4, on 26 April 1986, it’s a shrine to their heroism. The photos of the area afterward and graphs of radiation contamination stand as a terrible reminder and stark warning: ‘Never again’.