http://www.nwtv.co.uk/pages/travel/e...ter/caster.htm
This video gives an insight into my local roman fort which housed a port which in turn allowed the stopping of attacks by sea pirates and enabling fair trade. It was built in the early 3rd century The fort was called Garriannum I think and it's 150 to 250 yds away from where I live. Many people don't visit it however 5 miles up the road there's burgh castle a roman fort in which the wall is intact.
http://www.english-heritage.org.uk/u...caister_01.jpg (Fort image)