Aegina is a little Greek island that reputedly grows some of the world's best pistachios, a 45-minute boat ride from Athens. Pistachio trees have been cultivated here since the 1860s, & you'll find everything from fresh pistachios to pistachio ice cream to pistachio-flavoured candy & beverages. For sightseeing, check out the Temple of Aphaea, built circa 500 BC.