US Vice President Mike Pence with his wife Karen and Polish President Andrzej Duda with first lady Agata Kornhauser-Duda lay flowers on a train wagon as they visit the former Nazi German death camp of Auschwitz, near Oswiecim, Poland, Feb. 15, 2019. Photo: Reuters / Kacper Pempel.

US Vice President Mike Pence visited the former German Nazi death camp of Auschwitz in Poland on Friday, amid a four-day trip to Europe.

Around 1.1 million people – mostly Jews — were murdered by the Nazis at the site during the Holocaust.

Pence was accompanied on Friday’s tour of Auschwitz — his first — by Polish President Andrzej Duda.

Later on Friday, Pence tweeted: “May Auschwitz be a reminder to all people and all times that to fall silent in the face of evil is to ensure its triumph. #NeverAgain”

May Auschwitz be a reminder to all people and all times that to fall silent in the face of evil is to ensure its triumph. #NeverAgain pic.twitter.com/ej7KhzMS6c

— Vice President Mike Pence (@VP) February 15, 2019

On Thursday, at a US-sponsored Middle East diplomatic summit in Warsaw, Pence called out European countries for undermining American sanctions on Iran.

This weekend, Pence will attend the annual Munich Security Conference in Germany.