Polish locals watched a 1000-strong delegation of Israeli, British and European parliamentarians gather at Auschwitz-Birkenau this week.
Former Conservative head Lord Howard, Tory MP Matthew Offord and Anne McGuire, chair of Labour Friends of Israel attended the emotional ceremony on Holocaust Memorial Day.
The event, joined by 54 members of Knesset, was organised by Jonny Daniels, head of the From The Depths charity.
Twenty-eight year old Mr Daniels, who made aliyah from London aged 18, orchestrated the event after six months in planning. "We're making history," he said.
The ceremony at the camp was followed by a formal dinner, attended by a select 650 guests.
Italian singer Andrea Bocelli performed at the event alongside the Krakow Philharmonic Orchestra.
He paid tribute to victims of the Holocaust.