Dragon houses are prehistoric megalithic constructions, unique in the Mediterranean. They are constructed exclusively from stone without absolutely any bond or other material. The roof of dragon houses is made with the known as “ekforiko” system (staged construction). Enormous plates of slate converge in layers from two facing walls, and each one added sticks out a little more from the one below her, so as to create a pyramidical roof.
The masterly way of connecting the squared stone blocks is a real architectural challenge. The uniqueness of the dragon house leads to the conclusion, that their constructors had exceptional skills in the carving of stone and very good knowledge of statics and architecture.
Common characteristic of Dragon houses constitutes the supervisory place in which they have been constructed, with the leading role played by the biggest one on the top of Ochi, which shows the importance of the wider region of southern Evia in the monitoring of Aegean and her role in his connecting with the basin of Mediterranean.
Also a series of theories has been formulated for the use, the aim, the construction and the dating of Dragon houses. We will suggestively mention that specifically the Dragon house of Ochi has been considered an ancient sanctuary dedicated in the worship of Jupiter and Hera, fryktoria (ancient type of communication constructions using the torch light) and outpost.