Worlds largest cities by population

These cities are the most crowded places in the world as they belong to the biggest cities by population. So when you zoom wide into the map, you should be able to find such cities as they are also very large by area. As people move in (and sometimes also out), the ranking of the largest cities in the world may change sometimes. But these cities are surely among the top 20.

Here you will see all locations for the topic Worlds largest cities by population on the map. These are London, Paris, Moscow, New York, Shanghai, Istanbul, Buenos Aires, Seoul, Manila, Calcutta, Cairo, Tokyo, Osaka and Delhi. When you start this topic game, you will be asked to find these locations one by one, but in a random sequence.

So let's start this game with Calcutta. After playing Calcutta you can switch to the next location (one chosen randomly from London, Paris, Moscow, New York, Shanghai, Istanbul, Buenos Aires, Seoul, Manila, Cairo, Tokyo, Osaka, Delhi) just by clicking on a link in the response area.