Philips Arena

The Hawks and Thrashers call it home.

City of Atlanta

11. Atlanta Hawks, Philips Arena. Thanks to steps including water conservation, recycling, and energy-efficient lighting installation, this 19,000-seat venue — also home to the NHL’s Atlanta Thrashers — was recently awarded LEED certification for operations and maintenance. “My partners and I agree we must continue to find ways to manage our events with the lowest environmental impact possible,” said organization head Rutherford Seydel. “We will continue to work with our fans and partners to raise our green performance and promote conservation throughout metro Atlanta.”