6. Seoul, South Korea
Seoul is one of the world’s fastest-growing and advanced cities. Its popularity has made it extremely expensive, and a lot of it has to do with weakening Chinese currency, per the report. Several Chinese cities have moved down the list, as a result, and Seoul has risen up. You’ll pay a lot to live in Seoul, but you’ll also have access to some of the fastest internet connections in the world — if sticking it to Comcast is worth that much to you.