 Noida replaced Mumbai as the second-best realty destination, according to an analyst report.Roads in Noida are lined by trees and it is considered to be India's greenest city with nearly 50% green cover, the highest of any city in India.It's GDP is estimated to be around $25 Billion as of 2019.Noida came into administrative existence on 17 April 1976 and celebrates 17 April as "Noida Day".