Once known as the Steel City due to its reliance on big industry and steel mills, the city of Pittsburgh, Pennsylvania is beginning to diversify and Pittsburgh travel is becoming increasingly popular. Not only have the Pittsburgh Steelers garnered the all-important Super Bowl ring, but there are a number of things to do in Pittsburgh that involve art, culture and many other attractions. Popular among many Pittsburgh tours is Pittsburgh shopping, which is a favorite among bargain-hunters who love the chance to find high-end items without paying tax.