When you're in their city, if you click on their Map Icon THEIR city will be dead center.
Drag the map, just a bit, and a blue arrow will appear that points back to your own city. Just follow it.
If you're using Chrome, it's convenience to use your Ctrl+ScrollWheel to zoom your map to 25%, if you're going to be traveling any great distance. You can zoom all of the brouwers, but Chrome is the most convenient.