who was he?
He was an architect in present day India during Mughal Empire.
Ustad Ahmad Lahori
was an architect in present day India during Mughal Empire. 
who address the delhi as one of the greatest cities in the world UNANSWERABLE where is this place located? In India does it have an ancient history as well? Yes, it was probably inhabited before the second millennium BCE. was it ever colonized? Yes, by the British East India Company is the air polluted over here? Yes, According to the World Health Organization (WHO) Delhi was the most polluted city in the world in 2014. was this the venue of any international games? Yes, Commonwealth Games can you name any tourist attractions here? Qutb Complex, Red Fort, Humayun's Tomb etc please tell me more about the second one? It  is a historic fort in the city of Delhi that served as the main residence of the Mughal Emperors. how does it gets its name? It derives its name from its red-sandstone walls. by whom was it built? Ustad Ahmad Lahori
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Ustad Ahmad Lahori [SEP] Introduction
Ustad Ahmad Lahori was an architect in present day India during Mughal Empire. It is said that he was the chief architect of the Taj Mahal in Agra, India, built between 1632 and 1648 during the ruling period of Mughal emperor Shah Jahan. Its architecture, being a combination of Persian and Mughal architectural styles, is widely praised around the world and Taj Mahal is considered to be one of the 'wonders of the world'.