The Terrible Towel is a rally towel associated with the Pittsburgh Steelers, an American football team in the National Football League. The Terrible Towel has spread in popularity; for example, fans take their Towel to famous sites while on vacation. The Towel has been taken to the peak of Mount Everest, and even into space on the International Space Station. It is widely recognized as a symbol of the Steelers and the city of Pittsburgh.