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Ellen's Tower (Twr Ellin)

A Grade II Listed Building in Trearddur, Isle of Anglesey

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Latitude: 53.3044 / 53°18'15"N

Longitude: -4.6933 / 4°41'35"W

OS Eastings: 220637

OS Northings: 381992

OS Grid: SH206819

Mapcode National: GBR GMSZ.2XV

Mapcode Global: WH319.W68L

Plus Code: 9C5Q8834+QM

Entry Name: Ellen's Tower (Twr Ellin)

Listing Date: 26 March 1973

Last Amended: 30 June 1998

Grade: II

Source: Cadw

Source ID: 5713

Building Class: Gardens, Parks and Urban Spaces

Location: In an elevated position, overlooking the sea, c250m SE of South Stack Island.

County: Isle of Anglesey

Community: Trearddur

Community: Trearddur

Locality: Holyhead Mountain

Traditional County: Anglesey

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South Stack


Erected in 1868 for Ellin, wife of The Honorable W Owen Stanley M.P., of Penrhos. Dated on a slate plaque fixed on the wall, above the right entrance doorway. Now used as an information centre and observation tower for the RSPB.


A picturesque castellated folly, 2-storey and square in plan with an advanced, raised tower at the SE corner. Built of rubble masonry, roughcast rendered with a flat roof and projecting crenellated parapet. The tower has a square-headed entrance in the lower stage with single square-headed light above and 'arrow slits' in each face above. Another square-headed doorway to the right has a slate plaque above which reads: TWR ELLIN, ERECTED IN 1868, BY ELLIN, WIFE OF THE HONBLE W. OWEN STANLEY, M.P. OF PENRHOS, MAY ALL WHO VISIT THIS PLACE BLESS HER MEMORY. BENDITHIED PAWB A YMWELANT A'R LLE HWN EI CHOFFADWRIATH. There are large 3-pane windows in the right return and rear walls with a smaller single pane light in the left return.

Reasons for Listing

Included as a late C19 folly retaining much of its character, and of particular local interest for its connection with the Stanley family of Penrhos.

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