Not a Number Architects designs family summerhouse in Halkidiki, Greece

Not a Number Architects (NaNA), led by Ermis Adamantidis and Dominiki Dadatsi, has completed a three-in-one summerhouse on a tree-filled plot in Halkidiki, northern Greece, owned by Adamantidis’s parents. The 2,700-square-foot building, named Treelithon, spreads in a linear Z-shape between existing olive and pine trees, combining two stone towers with a white horizontal volume. It includes the family’s private residence and two rental units for seasonal vacationers. The architects, who spent childhood summers in Halkidiki, aimed to share those memories with their own children. Dadatsi described it as “our refuge.” The design reflects a site-specific approach inspired by a trilithon form.