The East End of London is the historic area east of the City of London and north of the Thames. Its exact perimeters are informally defined, and the East End comprises parts of Central London, East London, and the London Docklands. The East End has historically been associated with poor areas, and it was the site of many notorious slums in the nineteenth century. The area has long been associated with the docks and industries related to shipbuilding and with silk weaving due to large groups of Huguenot weavers arriving in the end of the seventeenth century. The area has received several influxes of immigrant groups throughout its history.