One with nature: The house on the hill.
The Alqueva Reservoir on the Portuguese-Spanish border is the largest artificial lake in Europe. It lies amid a gentle hilly landscape, surrounded by forests and open grassland. Hidden amongst this natural scenery is a house penned by the renowned Aires Mateus in Lisbon. This building was dug into a hill on the south-western shore of the lake by architect brothers Manuel and Francisco Aires Mateus.