Biggest American Cities that start with H on a Map

How many of the world's 50 most populous urban areas can you name?

Stay calm. But be fast! Because you'll need twitchy fingers and quick thinking to defeat this geography test.

Can you name every city in the world whose urban area has more than one million people - with the help of a map?

With the help of a map, name as many of the world's 500 most populous urban areas as you can!