One answer:
the first castle was built by the Normans in 1066, they started securing their position in a similar way, building Motte and Bailey Castles and later Stone Castles.
Another answer:
There really is no castle we can call the first. Castle design evolved from the earlier designs of forts used by Romans and the people who came immediately after them. The innovations that distinguished castles from those earlier forts did not appear all at once, but gradually, over a period of probably more than a century, between about the years of 800 and 1000 AD. We do not have clear records of this time, and the history of castles during it is very obscure. Without doubt, many castles were built of which we have no record, and what records we do have are very incomplete, so it is hard to trace the progress of the design.
We do have a castle that is said to be the oldest still in existence. Châteaux Doué-la-Fontaine, in France, which was built around 950 AD, is considered to be the oldest castle in Europe.
Another answer:
First castle in England was built around 1070, in the reign of William the 1st
The castle was built in 1068
see related answers below.
The first castle built according to a website said that a motte and bailey castle which is called windsor castle in berkshire is the first ever castle built
Norwich Castle was built in 1067.
king edward built the first concentric castle
The first castle in Europe was the Motte and bailey castle. It was first built in Normandy, France. It was built in 1051. I hope that I answered your question
it was built in 1070
when was the first circular keep castle built
the first castle built by the norman's was the wottle and darwb castle in gloucestershire And the first type of castle was motte and bailey
windsor castle
Caesar's tower and Guys' tower were the first to be built but the oldest part that was ever built was the keep in the motte and bailey castle.
The first stone castle was built in the city of norwich in the 12th century by duke William of Normandy
Durin the time he was alive before he conquered England.
IN york