The first structures of the aegean world follow techniques known over a huge geographical area; the simplest houses are oblong huts or four-sided houses with floors of beaten earth (Treuil 1983). Reconstructions of houses of this type have been proposed on the basis of remains founds at Achilleion in Thessaly, Nea Nikomedeia in Macedonia, and Nea Makri in Attica (AE1, fig. 1). They are made of posts connected by a horizontal wattle of branches covered in daub, and with a clay plaster which could take a coloured wash; they sometimes have one or two rows of posts at the interior (Perlès 2001, 173–99). The wattle and daub technique is almost exclusively found in the north (Thrace, Macedonia, Thessaly) and slowly fades away through the course of the Neolithic.