5. Tokyo , Japan

Tokyo is the world's most populated city. Its skyline has a number of unique characteristics that set it apart from other big city skylines, among them 15 structures at over 200 meters tall (including the Tokyo Tower which changes colors every night). But because of the density and vast size of the city, every corner appears to have its own skyline. With the height restrictions and the required red lights that flash atop all mid to tall-sized buildings make the city look spectacular at night. Tokyo is filled with neon lighting and unique, contemporary architecture, and like New York City is also often portrayed in movies for its aesthetic and eye-catching cityscapes. Interesting fact: Tokyo houses the world's largest fleet of helicopters to get around town if traffic gets too crazy.

Metro/Urban Population: 32.0 million