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St Trillo's Chapel

A Grade II Listed Building in Colwyn Bay, Conwy

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Latitude: 53.3144 / 53°18'51"N

Longitude: -3.7406 / 3°44'26"W

OS Eastings: 284135

OS Northings: 381130

OS Grid: SH841811

Mapcode National: GBR 2Z93.YL

Mapcode Global: WH64Z.HYZH

Plus Code: 9C5R8775+QQ

Entry Name: St Trillo's Chapel

Listing Date: 21 June 1950

Last Amended: 9 September 1994

Grade: II

Source: Cadw

Source ID: 146

Building Class: Religious, Ritual and Funerary

Location: Just above the beach, under the low cliff at the extreme NE point of the land.

County: Conwy

Community: Rhos-on-Sea (Llandrillo-yn-Rhos)

Community: Rhos-on-Sea

Locality: Rhos on Sea

Built-Up Area: Colwyn Bay

Traditional County: Caernarfonshire

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There is no secure account of the history of the building, and estimates of its date range from the C6 to the C16. There is also uncertainty as to its original purpose, with some historians contending that it was simply built as a well-house, others maintaining that it was intended as a chapel. After the roof collapsed (some time after 1855) the chapel was restored by Arthur Baker, with a lower external roof pitch, and a pointed instead of a segmental arch to the vault. It was again restored in 1935, under the supervision of Mr Harold Hughes of Bangor.


Rough rubble single celled structure with barrel vaulted roof. Doorway in narrow pointed archway in W gable wall, and small windows to N and E. The stained glass in the E window is by Morris and Co, 1935. Roughly cobbled floor, and altar slab over well.

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