Read the following excerpt and answer the question that follows:

"The Taj Mahal is considered to be the greatest architectural achievement in the whole range of Indo-Islamic architecture."

(Source: https://whc.unesco.org/en/list/252/)

In which city is the Taj Mahal located, and why was it built?

Taj Mahal is located in Agra. Mughal Emperor Shah Jahan built it in memory of his wife Mumtaz Mahal.