King Fahd Causeway
The Border Station is located on embankment No.4, which, with a total area of , is the biggest of all embankments. This artificial island is known as "Passport Island" or "Middle Island". The buildings of King Fahd Causeway Authority and other government Directorates were erected on the Border Station, as well as two mosques, two Coast Guard towers and two tower restaurants. The border station also has extensive landscaping all around the islands in addition to the services and road stations.