The high street is like a big outdoor shopping mall where you can walk around and see lots of different stores that sell things like clothes, shoes, toys, books, and food. It's a place where people go to buy things they need or want, or just to look at what's for sale. Some high streets also have banks, post offices, and other important places that people need to visit. It's where many people go to do their shopping or run errands. It's kind of like a big neighborhood of stores where you can find almost anything you want!