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Grotto at Maesfron

A Grade II* Listed Building in Trewern, Powys

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Latitude: 52.6957 / 52°41'44"N

Longitude: -3.065 / 3°3'54"W

OS Eastings: 328118

OS Northings: 311427

OS Grid: SJ281114

Mapcode National: GBR B3.3B2G

Mapcode Global: WH79J.WHMQ

Plus Code: 9C4RMWWM+7X

Entry Name: Grotto at Maesfron

Listing Date: 24 January 1995

Last Amended: 24 January 1995

Grade: II*

Source: Cadw

Source ID: 15641

Building Class: Gardens, Parks and Urban Spaces

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

County: Powys

Community: Trewern (Tre-wern)

Community: Trewern

Traditional County: Montgomeryshire

Tagged with: Grotto

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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.

Reasons for Listing

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.

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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