Historically, Pittsburgh has been grouped in the "rust belt"; however, reflective of the rebound of the region within the last generation, the metro area has come to be associated with the newly rebranded "Great Lakes Basin" gaining representation in the Great Lakes Metro Chamber Coalition, while the "America 2050" organization claims that Pittsburgh is one of the "principal cities" of the Great Lakes Megalopolis despite the fact that the city is about 120 miles from Lake Erie.