5Masdar, United Arab Emirates

Masdar City in the United Arab Emirates is a futuristic city in the making, combining clean energy, mass transit, and stunning architecture in a relatively small area in the vicinity of Abu Dhabi.

One goal of Masdar City is to replace traditional cars with a massive rapid transit system, eschewing fossil fuels in favor of wind, solar, and geothermal energy. This energy will, in part, be drawn from giant sunflower-shaped “umbrellas,” which will also act as shades while fanned out charging energy from the country’s intense, year-round sunlight.