This is the world's northernmost city and the base for tourism in Svalbard. A bit quirky, as you would expect from somewhere that spends four months of the year in near darkness, Longyearbyen doesn't take long to explore. Its brightly coloured wooden houses are built on stilts, as the ground in Svalbard is permafrost. When you enter a building, you are normally asked to remove your shoes, and leave your gun at the door. Gun carrying is more or less essential for the locals, as with 3,000 local hungry polar bears, it is said that you never know when you might need protection. That said, we visited safely without a gun!