Photos: A look inside the green, high-tech Genzyme Center

A view of the building's seven heliostats from behind. The mirrors are programmed by a controller to track the sun according to the time of year. During high winds or at night, they automatically go to a horizontal position.

That's just one of the controls that maintenance people need to be familiar with, which makes Genzyme Center more challenging to operate than typical buildings. "Smart buildings need smart people," said facilities manager Louis Capozzi (pictured here). "Troubleshooting isn't just going somewhere to fix it. You have to understand how it works."

Maintenance for the heliostats--the first to be installed in the United States--is generally easy, said Capozzi. But a hawk once attacked what it thought was a foe and cracked one of the mirrors.