Red fort was originally white not red but the building made of limestone when the white stone start chipping off then it's painted to red by British
Do you know it's took 10 year to build red fort construction start in 1638 and finish in 1648
The Kohinoor diamond was part of the furniture , Kohinoor diamond was part of shah jahan throne then main gate of red fort called Lahore gate and also there is a third gate called water gate ,red fort is world heritage site in 2007