4Norilsk, Russia
Norilsk is one of the coldest and most isolated cities in Russia. Winter temperatures can drop as low as -50°C (-58°F). The city is built on permafrost, meaning the ground is frozen all year round. Norilsk is known for its nickel mining industry, but pollution is a big problem. Despite the harsh climate, over 170,000 people live here, making it one of the largest cold cities in the world.
