The Taj Mahal is probably one of the most photogenic and ubiquitious monument images in the world. Some images here will be that of the Taj Mahal, obviously, but I've placed many of not-so-common perspectives. Up close, you'll see the Taj marble not quite so 'white' - that's because of centuries of environmental effects on the stone - so it appears blotchy yellow. Incidentally, the 1 day that I was there, it was quite overcast and thus poor lighting condition. Security in the area is hyper-tight.
If there's one thing you must do on your list before you leave this world, see the Taj!!