Huangshan, China

The population here is a mere 460,786, but don't let that fool you - navigating Huangshan's complex bureaucracy and 1,500-year-old stone steps is no easy feat. The humid continental climate can be a real headache, with wetter, colder conditions than the rest of Anhui province. However, the stunning mountain scenery, renowned sunrises, and presence of rare flora and fauna make this a draw for nature lovers and adventurous types willing to brave the challenges.