To see this one you'll have to follow the link, and don't even think of it unless you have DSL or better. (You also don't want to try this on your iPhone or netbook.)
A view of beautiful Rio that might be quite heartbreaking to hoar-rimed denizens of the Northern hemisphere right about now! (I don't know about you, but we're in the deep freezer.)
I'm not quite sure if this is a "photograph"—maybe a "web-o-graph"?
Note that you can zoom in or out and look up or down in addition to the slow pan.
(Thanks to Michael O'Donoghue)