A small window surrounded by detailed carving in Agra Fort, Agra, India. Agra Fort was the capital of the Mughal Dynasty till it was moved to Delhi in 1638. It is now well known as one of the palaces of Shah Jahan, who built the Taj Mahal, which can be veiwed from the fort’s walls.

https://en.wikipedia.org/wiki/Agra_Fort
https://en.wikipedia.org/wiki/Shah_Jahan