Newcastle upon Tyne Castle built
1080 CE.
Shown on the map at 54.969°, -1.610°.
The Castle, Newcastle, or Newcastle Castle is a medieval fortification in Newcastle upon Tyne, England, built on the site of the fortress that gave the City of Newcastle its name. The most prominent remaining structures on the site are the Castle Keep (the castle's main fortified stone tower, pictured below right), and the Black Gate, its fortified gatehouse. Use of the site for defensive purposes dates from Roman times, when it housed a fort and settlement called Pons Aelius (meaning 'bridge of (Publius) Aelius (Hadrianus)' – the Roman emperor Hadrian) – guarding a bridge over the River Tyne. Robert Curthose, eldest son of William the Conqueror, in 1080 built a wooden motte-and-bailey-style castle on the site of the Roman fort. Curthose built this 'New Castle upon Tyne' after he returned south from a campaign against Malcolm III of Scotland. Henry II built the stone Castle Keep between 1172 and 1177 on the site of Curthose's castle. Henry III added the Black Gate between 1247 and 1250. Nothing remains above ground of the Roman fort or the original motte-and-bailey castle.
Text from the Wikipedia article The Castle, Newcastle, licensed CC BY-SA 4.0.