Sea Mills is a suburb of the English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 port city of Bristol

Bristol

Bristol is a city, unitary authority area and ceremonial county in South West England, with an estimated population of 433,100 for the unitary authority in 2009, and a surrounding Larger Urban Zone with an estimated 1,070,000 residents in 2007...

. It is situated some 3.5 miles (6 km) north-west of the city centre, towards the seaward end of the Avon Gorge

Avon Gorge

The Avon Gorge is a 1.5-mile long gorge on the River Avon in Bristol, England. The gorge runs south to north through a limestone ridge west of Bristol city centre, and about 3 miles from the mouth of the river at Avonmouth. The gorge forms the boundary between the unitary authorities of...

. Nearby suburbs are Shirehampton

Shirehampton

Shirehampton, near Avonmouth, at the north-western edge of the city of Bristol, England, is a district of Bristol which originated as a separate village. It retains something of its village feel, having a short identifiable High Street with the parish church situated among shops, and is still...

, Sneyd Park

Sneyd Park

Sneyd Park is a suburb of Bristol, England, lying on the western fringe of Clifton Down, adjacent to the Avon Gorge and the Sea Walls observation point. Home to many millionaires, Sneyd Park was originally developed in Victorian times. Many Victorian and Edwardian villas line the edge of the Downs...

, Combe Dingle

Combe Dingle

Coombe Dingle is a suburb of Bristol, England, centred near where the Hazel Brook tributary of the River Trym emerges from a limestone gorge bisecting the Blaise Castle Estate to join the main course of the Trym. Historically this area formed part of the parish of Westbury on Trym, Gloucestershire,...

 and Stoke Bishop

Stoke Bishop

Stoke Bishop is a very affluent and medium-sized outer city suburb in the north-west of Bristol, located in between Westbury-on-Trym, Sneyd Park, and Sea Mills. Although relatively small, Stoke Bishop's population has increased due to substantial infilling on the Smelting Works sports ground and...

. Sea Mills forms part of the city ward of Kingsweston.
Sea Mills was the site of a Roman

Roman Empire

The Roman Empire was the post-Republican period of the ancient Roman civilization, characterised by an autocratic form of government and large territorial holdings in Europe and around the Mediterranean....

 settlement, known as Portus Abonae. The name and location suggest that this was a river or sea port.