Please answer the following question by reasoning step-by-step.
Context: The Hard Rock Hotel & Casino Atlantic City (formerly Trump Taj Mahal) is a casino and hotel on the Boardwalk, owned by Hard Rock International, in Atlantic City, New Jersey, United States.\n\nQuestion: what was the hard rock hotel in atlantic city?

Trump Taj Mahal
The relevant information to answer the above question is: The Hard Rock Hotel & Casino Atlantic City (formerly Trump Taj Mahal) is a casino and hotel on the Boardwalk, owned by Hard Rock International, in Atlantic City, New Jersey, United States.

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Therefore, the answer is Trump Taj Mahal