Naulakha Pavilion
When the pavilion was built in 1633 by the Mughal emperor Shah Jahan as a small summer house, it cost around 900,000 rupees, an exorbitant amount at the time.It is called Naulakha because in Urdu language, the word means 'worth 9 lakhs rupees'.
This also brought the word Naulakha into common use to signify something precious