Canary Wharf is a very big and tall place in London where lots of people go to work and have fun. It's kind of like a really tall city inside of London, with lots of big buildings that have offices, restaurants, stores, and lots of other things that people need.
Canary Wharf used to be a very different place a long, long time ago. It was a big dockyard where lots of boats would come and go, bringing things like bananas, sugar, and other things that people wanted to buy. But over time, the dockyard became less important and started to get old and worn out.
Then, some people had an idea to make Canary Wharf into a place where lots of people could work and have fun. They started building all these really tall buildings with lots of offices and other cool things. Now, lots of people go to Canary Wharf to work in those offices and visit the restaurants and stores.
Canary Wharf is really famous for its big buildings, especially one called One Canada Square. It's super tall and has a pointy top that looks like a triangle. Lots of people like to take pictures of it because it's so big and cool-looking.
So that's Canary Wharf, a really tall and big place in London where lots of people go to work and have fun!