text: Built by the Persian architect , UstÄ d ' Ä sÄ , the TÄ j Mahal is on the bank of the Yamuna River .
simplified: The architect who built the monument is named Persian architect , UstÄ d ' Ä sÄ . The TÄ j Mahal is located on the bank of the Yamuna River which can be observed from Agra Fort .