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Cof Cymru: National Historic Assets of Wales · Wales

Grotto at Maesfron

Trewern, Powys, Wales

The record

Designation
Listed building, Grade II*
Broad class
Gardens, Parks and Urban Spaces
Date of designation
24 January 1995
Locality
Trewern
Community
Trewern
Unitary authority
Powys
Country
Wales
Coordinates
52.69573, -3.06506
Cadw reference
15641

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

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This record in Cadw's own full report ↗

Cadw's description

Situated in the landscaped gardens to the south-east of Maesfron house. Built into the steep bank south of the gazebo.

Built c1830-50 for Francis Allen as a feature in the grounds associated with his Regency villa.

Grotto comprising a quartzite facade wall carried over a narrow opening by a half brick arch, the entrance comprising rebated stone jambs carrying a cut stone ogee arch.

Circular interior with decorative pebble floor, and quartzite/calcite faced walls carrying a saucer dome faced with cockle, mussel, oyster etc. shells, and glazed pottery. Shallow wall decorative features, including recessed triangle and Maltese cross patterns.

Graded II* as a scarce example of a C19 grotto that retains its shellwork and as an important element of the landscape garden of Maesfron.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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