Suppose The Taj Mahal is an ivory-white marble mausoleum on the right bank of the river Yamuna in the Indian city of Agra. It was commissioned in 1632 by the Mughal emperor Shah Jahan to house the tomb of his favourite wife, Mumtaz Mahal. The Taj Mahal is considered to be one of the most beautiful buildings in the world and is a UNESCO World Heritage Site.
Can we infer that "The Taj Mahal was built as a fortress."?