The story goes that the iron bars sticking out from the roof of many Greek houses are exemptions from taxpaying, as long as the house isn't yet finished but in fact they are exclusively there for the purpose of a later extension of the house. They have NOTHING to do with exemptions from taxpaying . (It's a good story though)!
Unfinished buildings is a common sight in Greece. The reason is that greek people build what they need today and leave the rest of the building unfinished for the future. It may seem that the Greeks are constantly building houses - and they are. Most Greek parents build a house for each daughter, but not for their sons (as they are supposed to marry a girl who will get a house from her parents). Often it is also the daughter that inherits her parents' or grandparents' house when they die.
It is no secret that Cretans own guns, especially in mountainous areas. Road signs are easy targets and you will see many of them that resemble swiss cheese after some shooting practice. Cretans usually fire their guns at weddings and other celebrations.
This tip relates not only to Crete but to all Greece. I'm very sad to say that my beloved country tends to be messy. It is often that beautiful patio gardens are treated by owners as heap of rubbish. I don't really know why they don't just throw the rubbish away.
The fact that the trunks of the trees are often painted white (limewash) in Greece is primarily to fight the ants and other insects. And besides that it looks nice, too!