"Imagine all of humanity living in a single, massive city; what would be the pros and cons of such a concentrated population?

When someone thinks of a mega-city, unspoiled and tropical beaches rarely come to mind. But there is one massive city in Africa that is not only seven times bigger than Birmingham but also has miles ...

The world's most populous mega city, according to multiple sources, is Bengaluru in India. This is followed by Bangkok in Thailand in second place. Bangkok is a familiar place for many tourists ...

A mind-boggling mega city where you 'never know which floor you're on' has only just entered the tourist spotlight. With trains that whizz through apartment blocks, mini 'towns' located on top of ...