Ok kiddo, have you ever seen a big line of flags waving in the air, like at a parade or a special event? That's called an Avenue of Flags!
Basically, it's like a big decoration made up of lots and lots of flags. People might put up an Avenue of Flags to celebrate something special, like a holiday or a big event happening in their community.
Sometimes, the flags might all be from one country, like America. Other times, they might be from lots of different countries, to show how everyone can come together and celebrate something happy.
The flags are usually on tall poles, so they can wave and flutter in the breeze. It's a really fun and colorful way to show how happy everyone is!