It's slightly longer than 3 minutes in total, but there's one riff that's repeated several times in different ways (you'll know it when you hear it) and it's just breathtakingly amazing!
The name Cliffs of Dover is a reference to the White Cliffs of Dover (Wikipedia Link) that are supposed to be very beautiful. They are situated in England in a county called Kent. Since I live in Kent, the piece also has a "homey" touch for me!
The only downside for me for this song is that it's quite fast and involved and it'll take me quite some time before I can play it myself on the guitar. But it's something to shoot for!
Also, Wikipedia mentions that it's part of Guitar Hero as well, and I have Guitar Hero so I am going to try and find it. Maybe I can play it there and who knows it might give me the motivation to tackle it on real guitar soon!
Here is a video, listen to the song yourself.