Which rock is Rashtrapati Bhavan made of?

Rashtrapati Bhavan:

1. It is made of red sandstone, drawing on the Mughal architecture.

2. It was built when New Delhi was being constructed on the Raisina Hill.

3. It used to be the Viceroy’s Palace before independence.

4. It was conceptualized by renowned architects Sir Edwin Lutyens and Herbert Baker.