The Tagus Island (Mouchão da Póvoa) is the largest private island in the Tagus River with 3,127428 sq. mil., 88.264.062 square feet of area, and 350 yards from the edge of the village of Póvoa de Santa Iria.
It was a noble title property, farmed by sucessive generations who benefited from its fertile soil and freshwater springs.
The island has now a new investment project with a network of dirt roads that enable travel throughout the estate it has a landing pier and a variety of different buildings, thirty in total, covering an area of 304,161 square feet.
The whole project is part of a unique context of ecological sustainability with reconstruction and conversion of all existing buildings, source and supply of drinking water from the island itself, solar and wind power generation, organic farming for consumption on the island and bicycle tracks and horseriding.