MUMBAI: Singer Katy Perry visited the Auschwitz-Birkinau State Museum in Poland and came out with a ‘heavy’ heart.

The 30-year-old took the time following her show in Krakow, Poland to visit the site of notorious concentration camps Auschwitz I and Auschwitz II-Birkenau, where more several people were murdered during the Holocaust, reportsfemalefirst.co.uk.

“My heart was heavy today," Perry captioned a photograph she took on the grounds.

My heart was heavy today. 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 "The one that does not remember history is bound to live through it again" George Santayana

A photo posted by KATY PERRY (@katyperry) on Feb 25, 2015 at 2:01pm PST

She also wrote 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 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 travelling to Poland.