The main marker, in red, shows the main location of your website (your company's address, the place where you live, ...). In the editor, you can drag-and-drop it where you want, or click on it and enter your address.
To add further informations (places to visit, touristic tours, ...), you can add mini-markers, lines and zones on your map. You can also import data directly from a KML or KMZ file (these files can be generated with GoogleEarth).
You can find below examples of map which can be easily created on SiteW.com.
Hotel in Paris, showing different places to visit
Corsica
Nice walk in the centre of France