Harrahs Trump Plaza opened at Mississippi Ave and the Boardwalk in 1980 as a partnership between Bill Harrah and Donald Trump. After a feud developed Trump bought out Harrah's 50% and later changed the Name to Trump Plaza in 1986..... They closed the door's for good September 14th 2014. Trump Plaza Hotel & Casino Mississippi Avenue at the Boardwalk Atlantic City, NJ 08401 Main: 609-441-6000 Fax: 609-441-2729 Website: http://www.trumpplaza.com