What do the jews see and smell when they get off the train? Where are the Jews ultimately taken? (name of the place)

As the train pulls into the camp, everyone suddenly sees the flames and chimney and smells the burning flesh that Madame Schaechter had prophesied. When her vision finally materializes, Madame Schaechter becomes silent. Everyone is forced to get out of the train, amidst the smell of burning flesh. They are at Birkenau, the reception center for Auschwitz.