Offa's Dyke
Offa's Dyke Path is a 177 mile (283 km) footpath which runs between Prestatyn in the north (Liverpool Bay) and Sedbury, near Chepstow (the Severn Estuary) in the south. This is from north of Offa's Dyke to south of it, and runs near the dyke in its central part. It is also thought to be constructed under the orders of Offa. It is a British National Trail.