Saturn, of course, has highly visible rings, and most of the rest of the solar system is jealous. Some other large planets do as well, but theirs are very faint. Saturn's are so prominent that Galileo actually saw them with his early telescopes.
Here, artist Ron Miller imagines what it might look like if those rings surrounded our own Earth. The view from Washington, D.C. is pretty neat, although it lacks the campaign ads that some vile politico would have figured out how to place on the rings themselves.