ELI5: Explain Like I'm 5

Sister city

Do you know when you make a new friend at school and you like them a lot, so you say that they are your best friend? Well, a sister city is like a best friend for a city.

A sister city is when two cities from different countries become friends and agree to help each other. They want to learn about each other's culture, food, language and traditions.

Just like how you talk to your best friend on the phone or online, cities also communicate with each other. The people who live in the sister cities write letters, emails or talk to each other to share their ideas and experiences. Sometimes they even visit each other and become pen pals.

Sister cities are important because it helps us to learn about the world, different cultures and countries. We can make new friends and work together to make the world a better place.