ST.E.R.N.A project involves the collaboration between the Municipality of Sifnos and the UrbanDig project, aiming to lay the foundations for a local action plan for Water, guided by local needs and the active participation of the Sifnos society, based on both traditional practices and innovative environmental technologies. The traditional Cistern, one of the most important tools for water conservation on the island and beyond, becomes a game and invites residents and visitors to learn about the Sifnos water culture and the island's history through play.