The pub occupies the site of the brewery that supplied beer to the ships, as well as to the glassworkers at the bottleworks. The Melton Constable – built in 1839, on the north side of the burn. It is named after Melton Constable, the Norfolk town associated with the Astley family who inherited the Delaval estates in 1814. The Delaval Arms – situated at the south end of Hartley. The Astley Arms – situated at the north end of Seaton Sluice. It is named in honour of the Astley family (see above). There is also Seaton Sluice Working Men's Club near the Waterford Arms. The Octagon, is a small castellated building to the east of the Waterford Arms which is grade II listed. It was built sometime before 1750 as the Harbour Office. It has been suggested that it was designed by Sir John Vanbrugh but there is no definitive evidence for this. It is now a private art gallery. Seaton Delaval Hall, built by Sir John Vanbrugh between 1718 and 1729 for Admiral George Delaval, is on the outskirts of Seaton Sluice, on the road to Seaton Delaval. The hall, which is a Grade 1 listed building, is now owned by the National Trust and is open to visitors on designated days. Near to Seaton Delaval Hall is the Church of Our Lady, built by the Delaval family in the 12th century and altered in the 14th and 19th centuries. It is a Grade 1 listed building. Holywell Dene is a tree-lined valley through which the Seaton Burn flows to Seaton Sluice. The valley contains paths running alongside the burn and is maintained by the group 'Friends of Holywell Dene'. There is a folly on the north bank of the dene known as 'Starlight Castle'. This was built by Sir Francis Delaval in 1750 after accepting a bet that he could build a home for a lady friend in a day. North of the harbour mouth, past Sandy Island, are Blyth Sands: a wide, sandy beach backed by sand dunes, stretching all the way to Blyth Harbour. References Dobson, H. G. (2005) From Tynemouth to the Tweed, H. G. Dobson, Anderson, D. J. (1997) Hartley to Seaton Sluice, Seaton Design Group, ISBN – Barrow, Tony (1992) "Walks Around the Old Coal Ports of Northumberland", Northumberland County Library, Allan, Tom (1992) "Seaton Sluice and Old Hartley, a history in photographs",