Newest Review: ... navy.  The fort was in continual occupation until the end of the 4th century, when Roman forces were withdrawn from Britain. The fort was designed as a defence and military building. When it was built, the fort occupied a small island at the northern side of a large estuary, where the rivers Ant, Bure, Yare and Waveney meet the sea.  In Roman times, these rivers were important routes for both trade and transport into East Anglia, where many Roman and native people lived. Nowadays, the estuary that existed in Roman times is mostly the dry land on which has sprung up the town of Great Yarmouth. In Caister Roman Fort's heyday,  the for... more