2,000-year-old computer - Found by sponge divers off the coast of Antikythera an outstanding piece of engineering was found. My chance a 2,000-year-old clockwork computer was discovered on a wreck that had been submerged under the water. Known as the Antikythera Mechanism, the device is something that is sure to fascinate anyone with love of engineering or computers. It is housed in the Bronze Collection of the National Archaeological Museum of Athens.
Psirri Street Art - For art lovers the Psirri Streets of Athens are a must. Many people choose to visit the main street but the real gems are found when you wander down the smaller streets. Speaking Greek will really help you here as you will be able to ask about the street art and locals may well take you on a secret tour. My speaking the language you may even be able to talk to some of the artists.
Stinging Nettles - Most people want to steer well clear of stinging nettles, coming up in a rash is the last thing they want. However, in Greece you may want to get a little closer. The Greeks love cooked stinging nettles and there are some places that will make a day out of harvesting them. Boiled up the nettles lose their sting and taste a little bit like nutty spinach. If you really must try something unusual Greece this has to be it.