The Museum of Liverpool is to extend an exhibition on John Lennon and his wife Yoko Ono.
It will now run until November.
'Double Fantasy' features images taken from Yoko's personal collection.
The exhibition examines the way in which the couple used their fame and influence to campaign for peace and human rights across the world.
Three hundred thousand people have visited the display since it opened last May, many of them leaving their own messages inspired by the exhibition. They will be collected when it closes and donated to the Imagine Peace Tower in Reykjavik in Iceland, Yoko's personal memorial to John.