Jalan Museum is a street in a place called Kuala Lumpur. It's a cool street full of important and interesting places called museums. A museum is a special kind of building where people keep really old or special things that tell us about history or art or science.
For example, there's a museum called the National Museum where you can learn about the history of Malaysia and see really old things that people used a very long time ago. And there's also a museum called the Islamic Arts Museum where you can see beautiful things like colorful carpets and sparkling jewels that people who follow the Islamic religion have made throughout the years.
So if you go to Jalan Museum, you can visit all of these cool places and learn a lot of interesting things!