1. Tokyo

Population: 33,800,000
Country: Japan

Tokyo is the capital of Japan. This huge, wealthy and fascinating metropolis brings high-tech visions of the future side by side with glimpses of old Japan, and has something for everyone. Over 400 years old, the city of Tokyo grew from the modest fishing village of Edo. Now it is the destination for business, education, modern culture, and government. Tokyo is vast it's best thought of not as a single city, but a constellation of cities that have grown together.