Sussex has three main geographic sub-regions, each oriented approximately east to west. In the southwest is the fertile and densely populated coastal plain. North of this are the rolling chalk hills of the South Downs, beyond which is the well-wooded Sussex Weald.
The Church of Saint Nicholas of Myra, usually known as St. Nicholas Church, is an Anglican church in Brighton, England. It is both the original parish church of Brighton and the oldest surviving building in Brighton. It is located on high ground at the junction of Church Street and Dyke Road in the city centre, very close to the main shopping areas.
The Domesday Book of 1086 records the presence of a church, valued at £12, in what was then the small fishing village of Bristelmestune. Shortly afterwards, it was granted to the Cluniacpriory in nearby Lewes. Although there is no certainty over where this church was located, it is possible that it stood on the site of the present-day St. Nicholas church: although Bristelmestune was located some distance to the south immediately adjacent to the coast, the ground there was marshy and suffered from erosion, and was vulnerable to attacks from invaders. The higher ground of the hill where the present church stands would have been better strategically and defensively, as well as being highly visible to residents of the village and the fishermen at sea.