Prince William visited the World Holocaust Remembrance Center, Yad Vashem, in Israel this week. And according to reports, it was a very emotional visit.

“Terrifying. [I’m] trying to comprehend the scale,” he said as he viewed a powerful display of the victims’ shoes, Haaretz reported.

William wore a traditional kippah on his head to show his respect as he laid a wreath in the Hall of Remembrance. He then headed to spend time with Israeli Prime Minister Benjamin Netanyahu and his wife Sara before meeting Israel’s President, Reuven Rivlin, at his residence.

In 2016, William’s dad Prince Charles attended the funeral of former President Shimon Peres.

Spokesperson Jason Knauf said in a statement before William’s visit, “The complex challenges in the region are of course well known. The non-political nature of His Royal Highness’s role — in common with all Royal visits overseas — allows a spotlight to be brought to bear on the people of the region: their cultures, their young people, their aspirations, and their experiences.”

The Duke of Cambridge lays a wreath at @YadVashem, in memory of those who perished in the Holocaust #NeverForget pic.twitter.com/lqlfUreRg9

— Kensington Palace (@KensingtonRoyal) June 26, 2018