2Hong Kong, China

When it comes to tall buildings, Hong Kong has more structures standing at over 500 feet than even Dubai.

In fact, the city boasts the highest concentration of skyscrapers in the world, giving it a truly futuristic feel. Hong Kong is also the only city where more people live above the 15th floor than below it, thanks to the sheer number of towering buildings that dot the skyline.
Additionally, the city’s transportation system is top-notch, with an extensive network of trains, buses, and ferries serving its densely populated areas.