Border Wars

In El Paso Texas, two ornate buildings once at the heart of the Mexican Revolution, still bear the scars of a deadly battle. A top-secret facility outside Berlin, used by a ruthless dictator to escape justice. In County Carlow, Ireland, an aristocratic party palace transformed into a military base, used by members of the IRA's all-female paramilitary wing. And a picture-perfect town in Spain where the residents were forced to evacuate on the orders of an authoritarian regime.