A global city is like a super special city that is really important and famous all around the world. Just like how some people are really popular and everyone wants to be their friend, some cities are really popular and everyone wants to visit them or live there.
A global city is usually really big and important because it has lots of businesses, banks, big companies, and important organizations. These things make the city rich and powerful, and lots of people from different countries come to work or study there.
Because so many different people from different cultures live and work in global cities, they become very diverse and interesting places. Global cities have lots of different kinds of restaurants, music, arts, and entertainment, so there's always something fun to see and do!
Examples of global cities include London, New York, Tokyo, Paris, and many others. These cities are like the cool kids in the playground and everyone wants to be friends with them!