President Donald Trump and first lady Melania Trump lay a wreath at Yad Vashem in Jerusalem on Tuesday to honor the victims of the Holocaust. AP

President Donald Trump is in Israel this week, the second stop on his first foreign trip since taking office. On Monday, Trump visited Yad Vashem, the Holocaust memorial, to commemorate the 6 million victims and take part in a wreath-laying ceremony at the Hall of Remembrance.

While there, Trump also left a note, following in the footsteps of past US leaders, including Presidents Barack Obama and George W. Bush and Secretary of State Hillary Clinton.

"It is a great honor to be here with all of my friends — so amazing and will never forget!" Trump wrote in a note signed by him and first lady Melania Trump:

Obama visited the memorial in July 2008 while he was still a US senator who was campaigning for president.

"I am grateful to Yad Vashem and all of those responsible for this remarkable institution," Obama's note in the guest book said. "At a time of great peril and promise, war and strife, we are blessed to have such a powerful reminder of man's potential for great evil, but also our capacity to rise up from tragedy and remake our world."

It continued: "Let our children come here, and know this history, so that they can add their voices to proclaim 'never again.' And may we remember those who perished, not only as victims, but also as individuals who hoped and loved and dreamed like us, and who have become symbols of the human spirit."

President George W. Bush's note in the guest book of Yad Vashem. AP

Bush visited Yad Vashem in January 2008, shortly before his second term ended. He, too, was brief.

"God bless Israel," Bush wrote in his note.

According to the Associated Press, the memorial chairman said Bush had tears in his eyes as he toured the memorial, and he reportedly told Secretary of State Condoleezza Rice that the US should have bombed Auschwitz to stop the genocide.

When first lady Laura Bush visited the memorial in May 2005, she wrote a longer message:

"Each life is precious. Each memory calls us to action to honor those lost. We committ (sic) ourselves to reject hatred and to teach tolerance and live in peace."

The guest book of Yad Vashem turned to the page first lady Laura Bush signed and wrote in during her visit to Jerusalem on May 22, 2005. AP Photo/Emilio Morenatti A note written by Secretary of State Hillary Clinton on March 3, 2009. AP Photo/Sebastian Scheiner Clinton went to the Holocaust memorial as secretary of state in March 2009, following an election in which she competed against Obama for the Democratic nomination for president. It was her first visit to the Middle East as the top US diplomat.

"Yad Vashem is a testament to the power of truth in the face of denial, the resilience of the human spirit in the face of despair, the triumph of the Jewish people over murder and destruction and a reminder to all people that the lessons of the Holocaust must never be forgotten," Clinton's note said. "God bless Israel and its future."