S
WSeparation barrier
WBerlin WallA
WCeuta border fence
WDetroit WallB
WEgypt–Gaza barrier
WLine of ControlC
WMaginot Line
WMoroccan Western Sahara WallD
WNagorno-Karabakh Line of Contact
WPanama Canal fenceE
WPeace lines
WSyria–Turkey barrierF
WUnited Nations Buffer Zone in Cyprus
WWall of Shame