Border walls come in many shapes and sizes---designed both to facilitate and obstruct the movement of various goods and species. Who designs the walls? What are they made of? How have they changed?  How do specific designs end up in particular places? 

Imperial designs: Remembering Vietnam at the US–Mexico border wall 

Victoria Hattam, New School for Social Research, USA

Calais' Container Camp

Miriam Ticktin, The Funambulist, Politics of Space and Bodies, Issue 5, May-June 2016