When it comes to environmental kudos, ultra-modern buildings usually steal the headlines.
And while the foundations of most historic buildings were laid long before the green construction boom, many of these structures are not the energy-sucking venues that you might expect. In fact, thanks to well-planned renovations, some century-old skyscrapers are among the greenest buildings on the planet.
The following buildings — best known for their historical significance and notable design — have also been recognized for their outstanding environmental friendliness, proving that the green revolution isn’t just for new buildings. (Text: Josh Lew)