Seoul is a true megacity. More than nine million people live here, keeping the post-war economic miracle alive. Many have claimed the title, but this is truly a city that never sleeps thanks to its inherent ‘work hard, play hard’ mentality. Boisterous barbeque meals, karaoke rooms and neon-lit bars will carry you through till sunrise. But you can also take the slow road. Walk up to remote temples, peruse silent art galleries or take tea, kneeled in ceremony, in a historic hanok (traditional Korean house). Whether you like it fast-paced or easy-going, Seoul has something for you.