Louie Powell , Oct 31, 2007; 07:37 p.m.
My recollection is that the area across the river is pretty inaccessable.
But I think you can get a nice view from Agra fort.
One of my favorite views is from inside the compound itself. There is a large, formal gate on axis with the front of the Taj Mahal and its reflecting pool. That is a great vantage point, but as you might suspect, it will be hard to find a time when it isn't overrun with tourists. Perhaps if you got there when they first opened the gate in the morning you might have a five minute window to work in.
But if you walk through the gate, and look to your left, you will see a series of arcades. Walk 50 ft or so in that direction, and you will find spots where you can frame the Taj Mahal with trees in the foreground to hide the tourists.