When he visited the camp, he put a wreath in memory of the victims.
Sources close to the king said it was a deep visit to him, and one assistant called it “deeply personal pilgrimage”.
Earlier, he said, remembering the “evil past”, remained “vital.”
Visiting the Jewish Public Center in Krakow, which he opened 17 years ago, the king said that the Jewish community of Krakow was “revived” from the ashes of the Holocaust, and that building a kind and more merciful world for the next generations was “the sacred task of all of us.”
British surviving in Polish, 94-year-old, was released from a concentration camp in Bergen Belsen and attended an Auschwitz event on Monday.
“We saw the consequences of camps, beatings and hatred,” she said to the BBC. “And what (children) is taught in the circumstances of the despot, they can be so harmful not only for them, but to everything. Therefore, we really have to protect it.”
Lord Picks, a special Messenger of the UK on post-Khalakost, who is the chairman of the International Holocaust memory, warned that “distortion” threatens the heritage and historical truth of the Holocaust.
After listening to those who survived in the tent in Birkenau, he told the BBC that “we saw a transfer from memory to history” because it was now unlikely that those who survived speeches much longer.
“It’s very scary and I don’t believe we are in the world after the Holocaust.”
A poll in eight countries, published last week, suggested that another Holocaust could be repeated. According to a 1000 poll in each country, the concern was particularly high in the UK at the conference on requirements.