In Sacramento, California, lies the Platinum LEED qualified Environmental Protection Agency headquarters. The building is able to be both sustainable and economically competitive.

From their case study:
"Thomas Properties invested $500,000 in efficiency upgrades to equipment, operations and employee practices. These improvements generated $610,000 in annual savings, paying for themselves in less than one year. Using an 8% capitalization rate, the annual cost savings have increased the asset value of the building by nearly $12 million."

It is said that a healthy building is crucial for having a productive company. A healthy building = more productive employees. In this building, 80% of the work space is filled with natural light. Here are some pictures of the exterior:

As part of the city's ordinance, buildings must have a certain amount of public space allocated. Here is just one example of some of the art in the building, available for public viewing: