The assembly hall in Agra Fort and people around it

The structure in the background is the assembly / audience hall in the Agra Fort where the emperor would give an audience. At one time, this would be an area that was full of soldiers and guards, and is now a common place where citizens of India can roam around, sit on the grass, and enjoy the heritage of their country.
Tip: For such a photo, you should consider whether you are getting enough light. When everybody is sitting and the background is not moving, you can open the aperture to its maximum and then experiment with the shutter speed. If you are using a digital camera, be sure to view the result before moving on.