The world’s narrowest city, where residents use ‘every inch of space available’

The city is crammed with high-rise buildings (Picture: Alamy Stock Photo)If you’re claustrophobic, you might want to think twice before visiting Yanjin.Located on the banks of the Heng River in a valley between two steep mountains, it’s widely thought to be the narrowest city in the world. At its narrowest, Yanjin, in China’s Yunnan Province, measures just 30 metres wide – equivalent to the length of three London buses – while the widest part is 300 metres.&nb