Erith (/ˈɪərᵻθ/) is a district of the London Borough of Bexley in south-east London, England, next to the River Thames, north-east of Bexleyheath and north-west of Dartford. Erith town centre has undergone modernisation and an increase in dwellings since 1961. The curved riverside high street contains three listed buildings, including the Church of England church and the Carnegie Building, while the district otherwise consists primarily of suburban homes. Erith is linked to central London and Kent by rail and a dual carriageway. It has the longest pier in London, and retains a coastal environment with salt marshes as well as industrial land.