Two architects in Sacramento have converted an 82-year-old bungalow into the area's first energy-efficient passive home, potentially setting a precedent for sustainable living in the city.

An ideal point from which to mount these excursions is the newly renovated Viharagala colonial bungalow in Viharagala Estate off Beragala in Haputale, a five-hour drive from Colombo. This century-old ...