Description:Take a tour of 5 Fun Facts About Hamburgers in Phoenix, United States, and learn some fun facts about hamburgers. Hamburgers are made of beef, not ham, and there is much debate over whether they actually originated in Hamburg. However, the hamburger in its current form, with ground beef and a bun, is a decidedly American creation. The largest hamburger ever created was over 8,000 pounds and was cooked for a burger festival in Wisconsin.(0:49)