Good for Katy Perry—it's important that the next generation never forgets, either.
Having performed last night in Kraków, Poland, the pop star today visited the Auschwitz-Birkenau State Museum, site of the notorious concentration camps Auschwitz I and Auschwitz II-Birkenau where over a million people were killed during the Holocaust.
"My heart was heavy today," Perry captioned a photo she took on the grounds, alongside which she also copied down the text from the main memorial plaque at the site:
"For ever let this place be a cry of despair and a warning to humanity, where the Nazi murdered about one and a half million men, women and children mainly Jews from various countries of Europe. Auschwitz - Birkenau 1940-1945."
Perry also quoted George Santayana in adding, "The one that does not remember history is bound to live through it again."
The singer had previously been in Milan, Italy, and then Prague—where she was spotted taking in the sights in track pants and a cozy puffy coat—before traveling to Poland. Her Prismatic World Tour touches down in Vienna on Thursday night.