 
 <prompt> Wetin dey special about Philadelphia? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: The area get plenti universities and colleges wey dey make Philadelphia one of the top international study destinations, as the city don evolve into educational and economic hub. With a gross domestic product of $388 billion, Philadelphia dey rank ninth among world cities and fourth for the nation. Philadelphia na di center of economic activity for Pennsylvania and e get seven Fortune 1000 companies wey dey there. The Philadelphia skyline dey grow, with plenty skyscrapers wey dey popular for the country. The city na hotspot for arts, culture, and history, wey attract over 39 million domestic tourists for 2013. Philadelphia get pass any other American city for outdoor sculptures and murals, and Fairmount Park na di largest landscaped urban park for the world. The 67 National Historic Landmarks for the city contribute to di $10 billion wey tourism generate. Philadelphia na di birthplace of the United States Marine Corps, and e also dey house plenty U.S. firsts, including the first library (1731), first hospital (1751) and medical school (1765), first Capitol (1777), first stock exchange (1790), first zoo (1874), and first business school (1881). Philadelphia na di only World Heritage City for the United States. 