In the early 1990s, modernization projects, such as desperately needed air conditioning and humidity control, caused upheaval in the museum.
Modernization projects caused upheaval in the museum during the early 1990s.
Begun by Delhi's first sultan, Qutb-ud-din, and completed by his son-in-law Iltutmish, the 73-m (240-ft) tower was erected to celebrate the Turkish conquest of Delhi.