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Palmer House Hilton - 17 E. Monroe Street, Chicago, Illinois, USA

While chocolate brownies were originally only an American treat, many countries in the world now bake and serve these delicious snacks. We can sincerely thank the 145-year-old Palmer House Hilton Hotel in Chicago, Illinois for inventing the brownie. The hotel has a beautiful lobby, with a decorated ceiling, but it was the kitchen that did the famous deed. The hotel still serves the original recipe, dubbed “Bertha’s Famous Brownie” and it's named for Palmer’s wife who first cooked them.