Andrzej Jastrzebiowski, 47, conservator at the Memorial And Museum Auschwitz-Birkenau, a former German Nazi concentration and extermination camp, works on the preservation of a piece of sheet metal from the door to a WWII camp kitchen, Oswiecim, Poland, on January 14, 2025. More than one million people died at the camp built by Nazi Germany when it occupied Poland in World War II - most of them Jews, but also non-Jewish Poles, Roma and Soviet soldiers. Some 850 people work at the museum to preserve their memory, a job with more emotional baggage than the average one. The museum offers tours of the site in more than 20 languages, led by some 350 guides, to up to 1.8 million people from around the world who visit Auschwitz in a year. (Photo by Wojtek RADWANSKI / AFP)