The Agra Fort is a UNESCO world heritage site located in Agra. Its a master piece of Mughal fort building. This Fort over 95 years old has been made by 4 Mughal rulers and a great combination of red stone and marble.
The picture shows a window of the Mughal kings bedroom from outside. It is planned in such a way that from outside it looks closed to give privacy, but from inside we can see an opening to ventilate the room.