Northumberland

Hadrian's Wall (Latin: Vallum Aelium), also known as the Roman Wall, Picts' Wall, or Vallum Hadriani in Latin, is a former defensive fortification of the Roman province of Britannia, begun in AD 122 in the reign of the Emperor Hadrian. Running from Wallsend on the River Tyne in the east to Bowness-on-Solway in the west of what is now northern England, it was a stone wall with large ditches in front of it and behind it that crossed the whole width of the island. Soldiers were garrisoned along the line of the wall in large forts, smaller milecastles and intervening turrets. In addition to the wall's defensive military role, its gates may have been customs posts. A significant portion of the wall still stands and can be followed on foot along the adjoining Hadrian's Wall Path. The largest Roman archaeological feature in Britain, it runs a total of 117.5 kilometres. It was designated as a UNESCO World Heritage Site in 1987.   

Bamburgh Castle is a castle on the northeast coast of England, by the village of Bamburgh. It is a Grade I listed building.The site was originally the location of a Celtic Brittonic fort known as Din Guarie and may have been the capital of the kingdom of Bernicia from its foundation c. 420 to 547. In that last year, it was captured by King Ida of Bernicia. After passing between the Britons and the Anglo-Saxons three times, the fort came under Anglo-Saxon control in 590. The fort was destroyed by Vikings in 993, and the Normans later built a new castle on the site, which forms the core of the present one. After a revolt in 1095 supported by the castle's owner, it became the property of the English monarch. In the 17th century, financial difficulties led to the castle deteriorating, but it was restored by various owners during the 18th and 19th centuries. It was finally bought by the Victorian era industrialist William Armstrong, who completed its restoration. The castle still belongs to the Armstrong family and is open to the public.