The UK Holocaust Centre is marking its 15th anniversary, and has been accredited as an official museum by the Museums, Libraries and Archives Council.
Centre director Helen Whitney said she was delighted that the museum had been accredited: "This is exciting and rewarding news for the centre and sets the scene for continued development of our collections and our provision of engaging, challenging, high quality education for young people about the Holocaust and its lessons for today."
The centre in Laxton, Nottinghamshire, hosted an anniversary day, including guest speakers, an art installation and a memorial for Auschwitz survivor Ibi Ginsburg, 85, who died in May. Documentary-maker Luke Holland and former Lib Dem London mayoral candidate Fiyaz Mughal OBE spoke at the anniversary on the theme of "Untold Stories" including tales of Muslims who protected and hid Jews during the Holocaust.
A memorial was held for Mrs Ginsburg, who was a regular speaker at the Holocaust Centre with her husband, Lithuanian Holocaust survivor Waldemar Ginsburg. Bulbs have been planted in the centre's garden in memory of her.
Dr James Smith, co-founder and chairman of the centre, said: "No-one who heard Ibi and Waldemar speak will ever forget them.
"Together they formed a powerful and unique double-act, borne of tragic shared experience, deep love for one another and a thoughtful, humorous engagement with society and young people."