REUTERS

Together with Polish Prime Minister Mateusz Morawiecki, a somber Merkel toured the camp’s crematorium where victims' bodies were burned, before walking through the camp's iron gate bearing the motto "Arbeit macht frei" (Work sets you free) and visiting the camp's brick barracks, Reuters reports.

During her term, Merkel has not shied away from admitting German responsibility for its atrocities in World War Two, but her visit will ensure she follows in the footsteps of two former chancellors by seeing the site before her term ends.

"Auschwitz is a museum but is also the biggest cemetery in the world... (Memory) is the key to building the present and future," museum director Piotr Cywinski told Reuters ahead of Merkel's visit at the invitation of the Auschwitz foundation.

Read alsoUkraine marks 78th anniversary of Babyn Yar tragedy

Merkel will announce the donation, half of which comes from Germany's federal government and half from its regional governments, at a ceremony marking the 10th anniversary of the Auschwitz-Birkenau Foundation.

The money will cement Germany’s place as the largest donor to the foundation, which funds the conservation efforts for the site where more than 1 million people, mostly Jews, died in what was then Nazi-occupied Poland.

More than 3 million of Poland's 3.2 million Jews were killed during the Holocaust, roughly around half of all Jews murdered during World War Two.