The Duke and Duchess of Cambridge, William and Kate, visit the site of a former Stutthof concentration camp in Poland on Tuesday. Photo: Kensington Palace Twitter account.

The Duke and Duchess of Cambridge, William and Kate, visited the site of a former concentration camp in Poland on Tuesday and met with a group of Holocaust survivors, the Jewish Chronicle reported.

The royal couple made the stop at Stutthof during a five-day tour of Germany and Poland.

Zigi Shipper — an 87-year-old Jew who was held at Stutthof and moved to London after World War II ended — was one of the survivors who recalled for William and Kate on Tuesday the horrors they endured in the camp at the hands of the Nazis.

“It is so important that young people know what happened,” Shipper was quoted by the Jewish Chronicle as saying. “But there aren’t many of us left. I hope today’s visit will remind the world what happened.”

Watch a video of the royal visit to Stutthof below:

The couple pay their respects at the Star of David in memory of 28,000 Jews who died at Stutthof and the 6 million killed in the Holocaust. pic.twitter.com/XtrzulxqTw

— Kensington Palace (@KensingtonRoyal) July 18, 2017