Often the greenest buildings are the ones that already exist, but need some new-fangled updates and innovation. For example, this 300 year old farm house in Central Italy that nearly burned to the ground in 1995. It has been completely revamped and turned into a beautiful bed and breakfast.
Perched on hills bordering the town of Triena in Central Italy, this 300 year old farm house was restored by the Swiss architects Markus Wespi and Jerome de Meuron of the agency Wespi de Meuron Architekten.
The brickwork was largely able to be salvaged, as was the foundation (though they were reinforced for seismic retrofitting). While the woodwork had to be replaced and the roof was rebuilt using traditional methods. Much of the interior was re-imagined in pure white to help reflect the natural light and create a sense of airiness. An additional guesthouse was mostly built out of additional salvaged bricks.
Thanks to Treehugger for the tip!