| [en] |
A system of fortifications constructed along a national frontier to contain the local population, as well as keep out undesirable raiders eg. Offa's Dyke. Use with more specific monument type where known. |
| [sl] |
Sistem utrjevalnih gradenj, zgrajenih vzdolž državne meje, namenjen varovanju lokalnega prebivalstva in obrambi pred napadalci, na primer Offa's Dyke. Uporabi z bolj preciznim tipom spomenika, kadar je znan. |
| [es] |
Sistema de fortificaciones y obras militares (fuertes, fortalezas, fosos, torres vigilancia..) construido a lo largo de las fronteras del Imperio |