This is taken from the path up to the citadel at Daulatabad Fort. Daulatabad is a 14th century hill fortress that lies on the road between Aurangabad and the Ellora caves. It was the capital of the Tughlaq Dynasty.
This structure isn’t really floating–as far as I know–but it looks like it is. It’s in New Delhi off the Rajpath between the President’s abode and the India Gate.