History in Structure

Observatory at Bryn Bras Castle

A Grade II Listed Building in Llanrug, Gwynedd

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Latitude: 53.1405 / 53°8'25"N

Longitude: -4.1764 / 4°10'35"W

OS Eastings: 254518

OS Northings: 362585

OS Grid: SH545625

Mapcode National: GBR 5M.65ZJ

Mapcode Global: WH54L.TBF8

Plus Code: 9C5Q4RRF+6C

Entry Name: Observatory at Bryn Bras Castle

Listing Date: 27 August 1999

Last Amended: 27 August 1999

Grade: II

Source: Cadw

Source ID: 22256

Building Class: Gardens, Parks and Urban Spaces

ID on this website: 300022256

Location: Located on rising ground in the 'Woodland Garden' to the east of Bryn Bras Castle.

County: Gwynedd

Community: Llanrug

Community: Llanrug

Locality: Bwlch

Traditional County: Caernarfonshire

Tagged with: Architectural structure

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The observatory was built in the 1920s during the ownership of Duncan Alves and replaced a summer house previously on the site.


Observatory. Circular tower of rather dumpy proportion. Rendered rubblestone on simple plinth with rendered brick parapet and horizontal railing to flat roof. Round-headed windows with iron bars but no glazing and entrance on south-east reached by a short flight of steps; stone corbel table below parapet.


Interior not accessible at time of Survey (February 1999) but has one ground-floor room with staircase leading to viewing platform on roof.

Reasons for Listing

Included as one of a number of garden structures erected in the 1920s, an important period for the development of the gardens and grounds at Bryn Bras Castle.

External Links

External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.

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