Okay, so let's pretend that you are building a house with your friends. You want your house to look special and important like the White House in Washington D.C.
The way the White House looks is called "federal architecture". It's a special kind of building style that was popular a long time ago during the time when the United States was a new country.
Federal architecture has a lot of special features that make it stand out. These features include big, tall pillars at the front of the house and a big roof that has a triangle shape at the top.
Another feature of federal architecture is that the front of the house is usually symmetrical, which means that it looks the same on both sides. This makes it look very elegant and balanced.
So, the next time you see a big, important-looking building with these features, you can say "Oh, that's an example of federal architecture!"