In looks and location, Portovenere is basically the sixth Cinque Terre. Together with the Cinque Terre and a three small islands, it is a UNESCO World Heritage Site, named for it's "exceptional scenic quality," which, yeah, pretty much sums it up. Portovenere is yet another spot in Liguria that I've liked enough to visit twice. I'm kind of wincing at my photos here, because they don't do it justice at all.
Lord Byron used to hang out here for inspiration, supposedly. I believe it.