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

Genzyme Center was expensive to build--$140 million, which is substantially more than what a typical office building the same size would cost. The company says that the investment was done to create a healthy and pleasant working space for employees, who have been shown to be more productive in well-lit spaces with access to fresh air. Employees in this building call in sick less than 1 percent of the time, less than other Genzyme buildings.