The trade outpost is a tile improvement that claims a trade good and allows the trade good to be harvested. It's important to remember that although there is no limit to how many Trade Outposts you can build, there is a limit on how many Tile Improvements you can build.
This improvement will center itself on the trade good chunk in addition to always facing EAST.
Benefits Of Trade
See the pages on Trade Goods for more information.
Like all Tile Improvements, trade outposts can be built anywhere inside your town's culture borders. If they are built outside the borders of your town, it is easier for the Trade Good to be pirated, and enemies can use it for shelter as they are not protected plots. The structure should still function unless destroyed during war.