The greatest influence to Medieval Cretan culture derives from the Venetian administration (Republic of Venice) in the years 1204-1669 (for almost 400 years) when Venice was a rich and dominant naval empire in the Mediterranean Sea. During that period, Crete, in an era of general brutality of the Middle Ages had the rear privilege to meet a very compatible human culture with its own, the humanism of the Venetian Renaissance that produced Greek poets and artists like Vitsentzos Kornaros (Erotokritos) and Domenikos Theotokopoulos (also called El Greco).
Good Friday is a Christian holiday commemorating the crucifixion of Jesus and his death at Calvary. If you ask me one of the unique ways to experience the Greek culture (irrespectively of ones faith) is to participate or watch live the procession of the epitaph, an old ceremony that takes place every year this day, in every city or small village all around Greece. Oils of myrths with beautiful scents are all around the devout crowd. Here is an older video of today.