Huashan, China

With a population of just 71,281, Huashan is hardly the bustling metropolis some might expect. The reality is that this remote mountain town in Shaanxi Province poses significant logistical challenges - from a frigid continental climate to treacherous hiking trails that have claimed many lives. While the mountain's Taoist temples and legend-shrouded peaks hold undeniable allure, the bureaucracy involved in accessing them can be a persistent headache. Ultimately, Huashan is best suited for the most hardy and determined of adventurers, those willing to brave the elements and potential hazards in pursuit of spiritual enlightenment.