The Pittsburgh Tour Company, Pittsburgh

The Pittsburgh Tour Company's guides cart guests around on classic red double-decker buses straight out of London. These experienced guides divulge interesting factoids along the tour's 21 stops, which include a fish market, Heinz Field, and the city’s depository of old chewing gum that has been scraped off school desks. The company's fleet of four buses offers up the chance to view the city from the second story of closed or open bus tops.